NCERT Solutions Class 5 EVS Our Wondrous World Chapter 02 Journey of a River

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Question 1. Name the states that Godavari flows through.
Answer: The Godavari river passes through Maharashtra, Telangana, Chhattisgarh, Odisha and Andhra Pradesh.
In simple words: Godavari flows through five states in India.

Exam Tip: Remember all five state names - Maharashtra, Telangana, Chhattisgarh, Odisha and Andhra Pradesh - as examiners often ask this directly.

Question 2. Name a dam and a wildlife sanctuary along the length of Godavari.
Answer: Polavaram Dam (or Sriram Sagar Project) is a major dam built on the Godavari. Coringa Wildlife Sanctuary (or Kawal Tiger Reserve) is an important wildlife sanctuary along the river.
In simple words: A dam stops water flow and makes a reservoir. A wildlife sanctuary is a safe place for animals.

Exam Tip: You can name either the first or second option for both - examiners accept alternatives. Write clearly which is the dam and which is the sanctuary.

Question 3. Which other small rivers join Godavari in its journey?
Answer: Small rivers that join a larger river are called tributaries. The Godavari has several tributaries, including Indravati, Manjira, Pranahita, Sabari and Purna. These tributaries make the Godavari wider and stronger as it flows towards the Bay of Bengal.
In simple words: Tributaries are small rivers that merge into a big river, making it larger and more powerful.

Exam Tip: Learn the term "tributaries" and remember at least three tributary names - Indravati, Manjira and Pranahita are the most common.

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Question 1. List three ways in which people are dependent on the river Godavari.
Answer: People rely on the Godavari river in several important ways. They get drinking water and water for cooking and washing from the river. Farmers depend on it to water their crops in fields. The river also supports jobs and livelihoods - many people work in factories that need water, and others earn money through fishing and tourism activities.
In simple words: People use river water to drink, wash, grow food and make money.

Exam Tip: Give three clear examples - water for daily use, water for farming, and water for jobs/industries.

Question 2. In which occupations are people engaged near the river Godavari?
Answer: Various people work in different jobs near the Godavari. Farmers do agriculture and use river water for irrigation of their fields. Many people catch fish from the river as their job. Factory workers use water in manufacturing processes. Others earn money through ecotourism - they guide tourists, give boat rides and manage tourist activities.
In simple words: People farm, fish, work in factories, and help tourists near the river.

Exam Tip: List at least four occupations clearly - farming, fishing, factory work and ecotourism are the main ones.

Question 3. Which crops do you see growing near the Godavari?
Answer: Rice (paddy), sugarcane, cotton and turmeric are the main crops grown near the Godavari river. These crops thrive in this region because the river provides plenty of water for irrigation throughout the year.
In simple words: Rice, sugarcane, cotton and turmeric grow well near the river because water is easy to get.

Exam Tip: Write all four crop names - examiners look for specific examples, not just "many crops."

Question 4. Which crops grow in your region? Where does the water for irrigation come from?
Answer: In my region, wheat, mustard and millets are the main crops that farmers grow. The water needed for irrigation comes from several sources - canals carry water from rivers and dams, tube wells bring groundwater from deep underground, and sometimes rainwater collected in ponds and tanks is used for watering crops.
In simple words: My region grows wheat, mustard and millets. Water comes from canals, tube wells and stored rainwater.

Exam Tip: Your answer will depend on your actual region - modify the crops and water sources based on where you live.

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Question. What problems can arise after a dam is built? How can they be solved?
Answer: Dams create several challenges for the surrounding area. The rising water floods large areas of forest, villages and farmland, destroying homes and crops. Many families and animals lose their habitats and must leave. The dam also blocks the natural flow of the river, which harms fish that need to move upstream and disturbs river ecosystems. Solutions include careful planning to move people to new homes with proper jobs and support. Before building, experts must study how the dam will affect nature and wildlife. Governments can also build smaller, eco-friendly check dams instead of huge dams, or use methods like rainwater harvesting to meet water needs without damaging the river.
In simple words: Dams flood land, displace people and block fish movement. We can solve this by planning carefully, studying impacts, and building smaller dams.

Exam Tip: Clearly separate problems and solutions - examiners mark each part separately. List at least two problems and two solutions.

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Question 1. Where do the plastic wrappers and bags that we litter end up?
Answer: Plastic wrappers and bags we throw away often find their way into drains, rivers, ponds and other water bodies through sewage systems and runoff. These plastics block water flow and pollute the water. Animals like cows, fish and turtles accidentally swallow them while eating or drinking, which can cause them serious harm or death.
In simple words: Plastic ends up in water and harms animals who eat it by mistake.

Exam Tip: Mention the journey of plastic (drains to rivers), the impact on water (blockage and pollution) and harm to animals specifically.

Question 2. What kinds of soaps, shampoos or floor cleaners (natural or readymade) are used in your home? Where does the unclean water mixed with these cleaners go?
Answer: In most homes, people use readymade soaps, shampoos and cleaning products. Common examples are hand wash, dishwashing liquid, toilet cleaner and detergent. The dirty water containing these chemicals flows into drains and sewage pipes. These pipes often lead directly to rivers or nearby water bodies, carrying harmful chemicals that pollute the water. This pollution makes water unsafe for drinking and harms aquatic life.
In simple words: Soap and cleaning water goes through drains into rivers, polluting the water.

Exam Tip: Name specific cleaning products used at home and trace their path to water bodies - this shows clear understanding of water pollution routes.

Question. Ask your parents or elders about the condition of water bodies near your home when they were your age. What is the status of those water bodies today?
Answer: When I asked my parents about water bodies near our home during their childhood, they shared that rivers, ponds and lakes were clean and full of water. People could bathe freely, wash clothes and drink water directly from them without fear. Many birds, fish and animals lived in and around these water bodies. Today, the situation has changed dramatically. Most of those water bodies are now polluted or have dried up. Some ponds are filled with garbage. Rivers are choked with plastic waste and dirty water from homes and factories. The number of birds and fish has reduced significantly. My parents are concerned that if we do not protect our water sources now, future generations may struggle to find clean water at all.
In simple words: Long ago, water bodies were clean and full. Now they are polluted and drying up.

Exam Tip: Compare past and present conditions clearly - use words like "then" and "now" to structure your answer well.

Question. Activity 2 - Make a list of things that we throw into the waste bin at home or school. If these things were thrown into a river or a pond, how would each of these items harm the animals, plants and people who live nearby and use this water?
Answer: Different waste items cause different types of harm to water bodies and the life in them:

Plastic wrappers do not break down in water and choke animals like turtles and fish, causing injury or death. Food waste makes water dirty and creates foul smells, while also attracting harmful germs and disease-carrying mosquitoes. Paper can block water flow and gradually pollutes the water over time. Metal and foil items dissolve slowly and can poison the water, harming any animal that swallows them. Shampoo and soap sachets release chemicals that pollute water and damage aquatic life. Broken toys or pens are non-biodegradable, meaning they stay in water for many years, hurting animals that touch or eat them. Throwing these items in rivers or ponds makes the water dangerous for all animals, birds, plants and people who depend on it. We must dispose of all waste in dustbins only and recycle whenever we can.
In simple words: Different trash harms water in different ways - some chokes animals, some poisons water, some takes years to disappear.

Exam Tip: Match each waste item to a specific harm - this detailed pairing shows deeper understanding than just listing items.

Question. Activity 3 - Take two clear glasses of water. Add a spoonful of sugar in one and a spoonful of cooking oil in the other. Stir both well and observe. What do you observe? Which one appears clear?
Answer: When we stir sugar into one glass of water, it dissolves completely and the water looks clear. When we stir cooking oil into another glass, it does not dissolve and floats on the surface, making the water look cloudy and oily. The glass with sugar appears clear because sugar mixes completely with water. This experiment shows that some substances dissolve in water (like sugar, salt, lemon juice and baking soda), while others do not (like oil, sand, plastic pieces and chalk powder). Understanding what dissolves helps us know which substances pollute water and which can be filtered out.
In simple words: Sugar dissolves and water stays clear. Oil does not dissolve and makes water cloudy.

Exam Tip: Write what you observe first, then compare, and finally state the conclusion clearly.

Question. Activity 4 - Look at the two images given below. Which river looks healthy and why? How do so many plants grow in water? What do you think happens when too many plants grow in a river?
Answer: A river with clean, clear water looks healthy because it supports balanced life with fish, plants and animals living together. There is no pollution or excessive plant growth. When fertilisers and chemicals from farms wash into rivers, they make the water rich with nutrients. This causes plants and algae to grow very quickly and become overgrown. When too many plants grow, they form a thick green blanket covering the water surface. This blanket blocks sunlight from reaching the water below, reducing oxygen that fish and other aquatic animals need to breathe. Many fish die due to lack of oxygen. The thick plant growth also makes the water unsafe for people to drink or use. This overgrowth of plants caused by excess nutrients is a serious form of water pollution.
In simple words: Many plants block sun and oxygen, killing fish and making water unsafe.

Exam Tip: Explain the cause (fertilisers), the effect (plant overgrowth) and the consequence (death of aquatic life) in sequence.

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Question. Can you list three things you can do to protect the water bodies near you?
Answer: To protect water bodies, we must take three important actions. First, throw all waste only in dustbins and never dump garbage, plastic or any litter into rivers, ponds or lakes. Second, use eco-friendly soaps, shampoos and cleaning products that do not harm water or its life. Third, spread awareness by talking to family, friends and community members about the importance of keeping water bodies clean and join organised clean-up drives to remove existing pollution.
In simple words: Put waste in bins, use safe soaps, and teach others to protect water.

Exam Tip: Your three actions should be practical and doable - avoid vague answers. Say clearly what action you will take.

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Question. Activity 5 - Match the Columns. Note: One problem could affect more than one thing.
Answer:

Exam Tip: Read the note carefully - some problems affect multiple things, so think about all possible connections before writing your answer.

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Question. Activity 6 - See the Image Given. What safety steps should be taken before, during and after a flood?
Answer: Before a flood strikes, we must take preventive measures. Stay informed by listening to local news and flood warnings. Prepare an emergency kit containing first aid items, flashlight, batteries and other essentials. Know the safe evacuation routes from your area and plan alternative ways to leave if needed. Leave your home before flooding starts if authorities advise you to do so. In flood-prone areas, keep emergency supplies like a flashlight, ladder and rope ready. During a flood, safety becomes urgent. Disconnect electricity and gas to prevent accidents and fires. Never walk or drive through flood water as it is deeper and more dangerous than it looks. Move to higher ground immediately. Follow all evacuation orders given by local authorities. Free any cattle and guide animals to safer locations. After a flood passes, take recovery steps carefully. Avoid contact with floodwater and contaminated food items. Do not return to your home until officials declare it safe. Inform your family that you are safe. When you do return home, clean and disinfect all surfaces, food items and eating utensils thoroughly to prevent disease.
In simple words: Before - get ready and know your escape route. During - go to high ground and follow orders. After - wait for safety approval and clean everything.

Exam Tip: Structure your answer in three clear sections - before, during and after - with specific actions for each stage.

Question. Activity 7 - Read the flood safety tips given in Activity 6 and organise a role-play where you are the Sarpanch or Municipal Corporator of your village or city. Discuss what actions you will take to - prevent flooding, prevent damage caused by flooding, keep elderly people and people with disability safe, and keep animals safe.
Answer: As a leader of my village or city, I would take comprehensive steps to address all flood-related concerns. To prevent flooding, I would ensure proper drainage systems are built throughout the area and cleaned regularly to allow water to flow freely. I would ban the cutting of trees and actively promote tree plantation, as trees slow rainwater runoff and prevent flooding. I would also build rainwater harvesting systems to reduce the amount of water running off into streams. To prevent damage when floods do occur, I would build strong embankments and flood barriers in areas prone to flooding. I would create a disaster warning system using local radios and mobile phone alerts so people get early notice. I would identify and repair weak or broken bridges and roads in advance so they can handle the flood. To protect elderly people and those with disabilities, I would arrange special rescue and medical teams trained to help these vulnerable groups. I would set up shelters equipped with ramps, wheelchairs, medicines and basic care items. I would maintain a list of elderly and disabled residents and keep contact with their families to ensure no one is left behind. To keep animals safe, I would arrange temporary shelters in higher places where livestock can stay during floods. I would free cattle early and guide them to safer areas. I would store dry fodder and water for animals in case of emergency so they have food and water during the flood period.
In simple words: A good leader prevents floods with trees and drainage, protects vulnerable people with special teams, and saves animals with shelters and food.

Exam Tip: Address all four points clearly - prevention, damage reduction, elderly/disabled care and animal safety - to show complete understanding of community flood management.

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Question 1. What would you do if you had no water in your home for an entire day?
Answer: If I had no water at home for a full day, I would carefully manage my stored water supply. I would use it wisely for essential activities like drinking and cooking only. I would avoid wasting water on activities like washing clothes or bathing that day. I might also reach out to neighbours to ask if they could spare some water to help me. If needed, I could go to a nearby public tap or handpump in the community to get additional water.
In simple words: Save water for drinking and cooking, and ask neighbors or find a public tap for help.

Exam Tip: Show practical problem-solving skills - mention what you would use water for and where you would find it.

Question 2. What if there was no water for a week? How would you bath, drink, cook or clean? Where would you go to find water?
Answer: If there was no water for an entire week, I would take more serious steps. I would collect water from nearby water tankers that visit the area, or from community wells and public taps. I would try to collect rainwater if possible during that week. For drinking, I would boil or filter the water to make sure it is safe to drink. I would limit bathing and cleaning to save water and use only what is absolutely needed. I might stay with a relative or friend who has access to water to meet some of my needs. This week-long shortage would teach me how valuable water is and how careful we must be about using it.
In simple words: Collect from tankers and wells, boil water to make it safe, limit bathing and stay with others if needed.

Exam Tip: Show awareness of water sources in your community and hygiene practices - boiling water to remove germs is an important point.

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Question 1(a). Find out which river(s) flow through your state. What are they used for?
Answer: Rivers like Godavari and Krishna flow through my state and serve many important purposes. They provide drinking water to towns and villages along their path. Farmers use their water for irrigation to grow crops. The rivers support fishing communities who catch fish for food and income. Transportation of goods by boat is possible on these rivers. Dams built on these rivers generate hydroelectric power to supply electricity to homes and industries.
In simple words: Rivers give us drinking water, water to grow food, fish, transport and electricity.

Exam Tip: Know the major rivers in your actual state and list at least three uses - this shows local knowledge.

Question 1(b). Are there any dams on them?
Answer: Yes, there are several dams built on the rivers in my state. Jayakwadi Dam is constructed on the Godavari river. Koyna Dam is built on the Krishna river. These dams store water during rainy seasons and release it when needed, providing water for irrigation and drinking during dry months. They also generate electricity through hydropower.
In simple words: Yes, there are dams like Jayakwadi on Godavari and Koyna on Krishna that store water and make electricity.

Exam Tip: Name at least one dam in your state - research this beforehand so your answer is locally accurate.

Question 2. Ask your grandparents or parents to share any story or festival related to rivers in your region and present it in the class.
Answer: My grandmother told me about Godavari Pushkaram, an important festival celebrated every twelve years in South India. During this festival, people gather along the banks of the Godavari river in large numbers. They take a holy dip in the sacred waters to purify themselves spiritually. People also perform religious rituals to honour their ancestors and seek blessings. The festival shows how deeply rivers are connected to the culture and beliefs of people in my region. It reminds us why we must respect and protect these rivers.
In simple words: Godavari Pushkaram is a festival every 12 years where people bathe in the river to purify themselves and honor ancestors.

Exam Tip: Share a real story from your family - personal experiences are valued more highly by examiners than generic information.

Question 3(a). Ask an elder in your family: What was the condition of rivers when you were a child?
Answer: When I asked an elder in my family about rivers during their childhood, they told me that rivers were clean and full of water throughout the year. People used them for bathing, washing clothes and other daily activities. The water was clear enough to drink directly. Fish and other aquatic animals were abundant. Many birds could be seen around the river banks. The river was an important part of community life.
In simple words: Rivers were clean, full and safe to use. Many animals and fish lived in them.

Exam Tip: Quote your elder's actual words if possible - this makes the answer more authentic and personal.

Question 3(b). What has changed since then?
Answer: Today, rivers are polluted with waste and plastic scattered throughout them. The water levels are often low due to overuse and poor rainfall in recent years. Many fish species have disappeared. The water is no longer safe to drink or use for bathing. Fewer birds visit the river areas now. The quality of river water has declined significantly compared to the past.
In simple words: Rivers are now polluted, have less water and fewer animals living in them.

Exam Tip: Contrast the past and present clearly - use "then" and "now" language to show the dramatic change.

Question 4. Why do you think people built houses and cities near rivers in the past? Are rivers still important today in the same way?
Answer: People built houses and cities near rivers in the past because rivers offered many benefits. They provided a reliable source of fresh water for drinking and cooking. Rivers supported agriculture through irrigation. They supplied fish and other food resources. Rivers served as natural highways for transportation. The soil near rivers was fertile, making it ideal for farming and settlement. Yes, rivers remain important today for these same reasons - they still provide water, support farming and fishing, and enable transport. However, rivers are now more polluted and overused than in the past, so we must take better care of them to ensure they continue to serve us and future generations.
In simple words: People lived near rivers for water, food and transport. Rivers are still important, but now they are polluted and need protection.

Exam Tip: Explain historical reasons clearly, then link them to modern importance while acknowledging the challenges rivers face today.

Question 5. If you could create one new rule to protect rivers in your city or village, what would it be?
Answer: If I could create one new rule to protect rivers, I would make a law that strictly forbids anyone from throwing garbage, plastic or sewage into rivers. The rule would apply to all industries, factories, homes and farms. To enforce it, I would charge heavy fines on anyone or any business that violates this rule. Breaking the rule would result in serious financial penalties that would deter people from polluting. This single rule would address the biggest threat to rivers - pollution from waste and sewage - and help keep rivers clean for everyone.
In simple words: No one can throw garbage or sewage in rivers, and those who do will pay heavy fines.

Exam Tip: Make your rule specific, practical and enforceable - vague ideas like "keep rivers clean" are less impressive than concrete rules with consequences.

Question 6. Think about a time when you wasted water. What could you have done differently?
Answer: I remember once leaving the tap running while brushing my teeth, wasting a lot of clean water needlessly. I could have turned off the tap immediately after wetting my toothbrush, then turned it back on only when I needed to rinse. This would have saved significant water without affecting my ability to brush properly. This experience taught me that small habits - like not letting water run unnecessarily - can make a big difference in water conservation when practiced by everyone.
In simple words: I left the tap on while brushing. I could have turned it off to save water.

Exam Tip: Give a specific personal example - this shows reflection and genuine learning, not just memorized facts.

Question 7. Can you design a simple water filter using everyday materials? What would you include and why?
Answer: Yes, I can design a simple water filter using materials found at home. I would take a plastic bottle and cut it from the bottom. Inside, I would place layers of different materials - first pebbles at the bottom, then sand, then activated charcoal, and finally cotton at the top. When dirty water is poured through this filter, it passes through each layer. The pebbles catch large particles and debris. The sand filters out smaller bits of dirt and soil. The charcoal removes bad smells, discoloration and some harmful chemicals. The cotton catches fine particles and completes the cleaning. This layered approach mimics water treatment used in real purification plants. It is simple, inexpensive and very effective for making dirty water cleaner when proper water purifiers are not available.
In simple words: Layer pebbles, sand, charcoal and cotton in a bottle to filter dirty water and make it cleaner.

Exam Tip: Explain why each material is included - examiners look for understanding of how filtration works, not just listing materials.

Question 8(a). Imagine you are planning a new city near a river. What steps would you take to keep the river clean?
Answer: To keep the river clean in my planned city, I would build proper drainage and wastewater treatment plants. All sewage from homes and industries would be treated before any water is released into the river. I would strictly enforce laws that prohibit dumping of garbage or untreated sewage. I would create public awareness campaigns teaching citizens about river protection. I would establish fines and penalties for industries that pollute. I would also create clean-up initiatives where communities can participate in removing waste from the river regularly.
In simple words: Treat sewage before it enters the river, ban dumping, and teach people to keep the river clean.

Exam Tip: Show a mix of infrastructure (treatment plants), regulation (laws and fines) and community involvement (awareness and clean-ups).

Question 8(b). Prevent floods during heavy rains.
Answer: To prevent floods during heavy rains, I would construct strong embankments and flood barriers along the river course in my planned city. I would plant many trees throughout the city and surrounding areas because trees slow down rainwater and allow the soil to absorb more water, reducing flooding. I would ensure good drainage systems are built and maintained properly so water flows away efficiently. These combined measures would work together to manage heavy rainfall and prevent dangerous floods that harm people and property.
In simple words: Build strong embankments, plant trees and make good drainage to prevent floods.

Exam Tip: Give specific infrastructure examples - embankments, trees, drainage - rather than vague statements like "prevent water buildup."

Question 8(c). Ensure there is always enough water for everyone, even during summers.
Answer: To guarantee sufficient water year-round, I would promote rainwater harvesting systems where homes and buildings collect and store rainfall during monsoon seasons. I would encourage water recycling in industries and homes so water is used multiple times before disposal. I would educate citizens about careful water use in daily activities - turning off taps while brushing, using water-efficient fixtures and avoiding wastage. I would ensure water is distributed fairly based on actual needs. With these strategies working together, water would be available for everyone throughout the year, including during dry summers.
In simple words: Collect rainwater, recycle water, teach people to save water and share it fairly.

Exam Tip: Mention both storage (rainwater harvesting) and efficiency (recycling and conservation) - this shows complete water management thinking.

Very Short Answer Type Questions: Class 5 EVS Chapter 2

Question 1. Where does the river Godavari begin?
Answer: The Godavari river begins at Trimbakeshwar in Maharashtra.
In simple words: Godavari starts at a place called Trimbakeshwar in Maharashtra state.

Exam Tip: Remember the exact location name - Trimbakeshwar is frequently asked.

Question 2. What is the total length of the Godavari River?
Answer: The Godavari River is 1,465 kilometres long.
In simple words: Godavari is 1,465 kilometers in length.

Exam Tip: Write the exact number - 1,465 km - not an approximation.

Question 3. Into which sea does the Godavari flow?
Answer: The Godavari river flows into the Bay of Bengal.
In simple words: Godavari ends in the Bay of Bengal.

Exam Tip: Bay of Bengal is the standard answer - it is the sea to the east of southern India.

Question 4. What are small rivers that join a bigger river called?
Answer: Small rivers that join a larger river are called tributaries.
In simple words: Smaller rivers that flow into bigger rivers are tributaries.

Exam Tip: This is a definition question - learn the term "tributaries" as it appears frequently in exams.

Question 5. What is the other name of the Godavari River?
Answer: The Godavari River is also called the Dakshina Ganga.
In simple words: Godavari is called Dakshina Ganga, which means southern Ganges.

Exam Tip: Dakshina Ganga means "Southern Ganga" - understanding the meaning helps you remember it.

Question 6. What type of river is the Godavari - seasonal or perennial?
Answer: The Godavari is a perennial river.
In simple words: Godavari flows all year round, even in summer and dry seasons.

Exam Tip: Perennial means it has water throughout the year, unlike seasonal rivers that dry up.

Question 7. Name one dam built on the Godavari River.
Answer: Polavaram Dam is a major dam built on the Godavari river.
In simple words: Polavaram is a dam that stores water from the Godavari.

Exam Tip: You can also mention Sriram Sagar Project (SRSP) as an alternative answer.

Question 8. Name one wildlife sanctuary along the Godavari.
Answer: Coringa Wildlife Sanctuary is an important wildlife sanctuary along the Godavari river.
In simple words: Coringa is a safe place for wild animals near the Godavari.

Exam Tip: You can also mention Kawal Tiger Reserve as an alternative.

Question 9. What forms when a river spreads into small streams near the sea?
Answer: A delta forms when a river spreads into small streams near the sea.
In simple words: A delta is where a river splits into many small streams before meeting the ocean.

Exam Tip: Deltas are triangular-shaped areas of land formed by sediment deposited by the river.

Question 10. What is a Water ATM?
Answer: A Water ATM is a machine that gives clean drinking water when you insert a coin or card into it.
In simple words: Water ATM is like a coin-operated water dispenser for getting clean water.

Exam Tip: Water ATMs promote responsible water use by making people pay for water, which reduces wastage.

Question 11. What does the National Water Mission aim to do?
Answer: The National Water Mission aims to help people use water wisely and manage it better across India.
In simple words: National Water Mission teaches people to save water and use it carefully.

Exam Tip: This is a government programme focused on water conservation and efficient management.

Question 12. Why should we turn off the tap while brushing teeth?
Answer: We should turn off the tap while brushing teeth to save water and avoid wastage.
In simple words: Turning off the tap while brushing saves clean water that we all need.

Exam Tip: This is a simple water conservation habit - mention both saving water and avoiding waste.

Question 13. What can we do with leftover water from washing vegetables?
Answer: We can reuse leftover water from washing vegetables to water plants in our garden or home.
In simple words: Water used to clean vegetables can be used again to water plants instead of wasting it.

Exam Tip: This is a practical example of water reuse that students can actually do at home.

Question 14. What causes green blankets on rivers?
Answer: Fertilisers washed from agricultural fields cause green blankets on rivers.
In simple words: Farm chemicals wash into rivers and make too many plants grow, forming a green blanket.

Exam Tip: Green blankets are caused by excess nutrients (from fertilisers) that create algal blooms and plant overgrowth.

Question 15. What is one small action that can save rivers?
Answer: Not throwing plastic or waste into water bodies is one small action that can save rivers.
In simple words: Don't litter in rivers and ponds - put all garbage in dustbins instead.

Exam Tip: Any individual water-saving or pollution-prevention habit counts as a valid answer here.

Short Answer Type Questions: Class 5 EVS Chapter 2

Question 1. What is the importance of the Godavari River in southern India?
Answer: The Godavari River holds immense importance in southern India for many reasons. It is called Dakshina Ganga due to its deep sacred and spiritual value in the region. The river provides essential drinking water to millions of people and supports large-scale agriculture through irrigation. Many livelihoods depend on the river - fishing communities catch fish for food and income, and tourism activities bring money to the region. The river also plays a central role in cultural and religious festivals celebrated by local people throughout the year.
In simple words: Godavari is a holy river that gives water, helps farming, provides jobs and is important in festivals.

Exam Tip: Include cultural/religious importance along with practical uses - this shows holistic understanding.

Question 2. What are tributaries and how do they affect the Godavari River?
Answer: Tributaries are smaller rivers that join and merge into a larger river. Rivers like Indravati, Manjira, Pranahita, Sabari and Purna are all tributaries of the Godavari. As these tributaries join the main river, they add water volume and make the Godavari wider and stronger. This increased water flow helps the Godavari support life along its entire length, providing water for agriculture, drinking and other uses. The tributaries essentially increase the Godavari's capacity and power as it journeys towards the sea.
In simple words: Small rivers (tributaries) join Godavari and make it bigger, wider and stronger.

Exam Tip: Define tributaries clearly and name specific ones, then explain their effect on the main river.

Question 3. What are Water ATMs and how do they help in water conservation?
Answer: Water ATMs are automated machines that provide clean drinking water when a person inserts a coin or card, just like a regular bank ATM dispenses money. These machines are particularly valuable in water-scarce areas where clean water access is limited. Water ATMs promote responsible water use by requiring payment - this makes people value every drop of water they use. When people have to pay for water, they naturally use less and become more conscious about avoiding wastage. The machines also reduce the handling and spillage of water compared to other distribution methods, making them an effective tool for water conservation.
In simple words: Water ATMs sell clean water like vending machines. Paying for water teaches people to use less and save it.

Exam Tip: Explain both the mechanism (coin/card) and the conservation benefit (payment makes people value water).

Question 4. What does the National Water Mission aim to achieve in India?
Answer: The National Water Mission is a government programme designed to address India's water challenges comprehensively. It aims to promote water conservation practices across the country and improve efficiency in how water is used. The mission works to ensure that water is managed sustainably for current and future needs. It raises public awareness about the importance of saving water and develops water-saving habits. The mission also supports practical projects like water recycling systems, rainwater harvesting installations and protection of rivers and lakes. Through these efforts, the National Water Mission works towards making water available and safe for everyone in India.
In simple words: National Water Mission teaches water saving, improves water use, and protects rivers and lakes in India.

Exam Tip: Mention awareness-raising, efficiency improvement and practical projects - show a comprehensive understanding.

Question 5. How does building a dam affect rivers, people and wildlife?
Answer: Building a dam creates significant impacts across multiple aspects of the environment. The dam stores large quantities of water and uses this stored water to produce electricity, benefiting agriculture and cities. However, the construction causes large areas of forest, villages and farmland to be flooded as the water level rises behind the dam. People living near the river lose their homes and land and must be relocated - this displacement disrupts their lives and livelihoods. Wildlife habitats are destroyed as forests are submerged, causing animals to lose their homes and sometimes populations to decline. The dam blocks the natural flow of the river, disrupting fish migration patterns and damaging river ecosystems. While dams provide important benefits, they cause serious harm if not planned carefully with consideration for affected people and wildlife.
In simple words: Dams give electricity and water but flood homes, displace people and harm wildlife.

Exam Tip: Discuss both positive effects (electricity, water storage) and negative impacts (displacement, habitat loss, ecosystem disruption).

Question 6. What role do trees play in preventing floods?
Answer: Trees play a crucial role in flood prevention through multiple mechanisms. When rain falls, trees slow down the rainwater that would otherwise rush quickly towards rivers and cause flooding. Tree roots help the soil absorb more water, reducing the amount that flows as surface runoff down slopes and into waterways. This increased water absorption in soil means less water rapidly enters rivers at once, preventing dangerous flooding. Areas with more trees experience less waterlogging (standing water) and less soil erosion. By slowing water movement and increasing absorption, trees protect rivers and nearby communities from flood damage. Planting and protecting trees is therefore one of the most important natural flood prevention strategies.
In simple words: Trees slow rain, help soil absorb water and prevent floods from happening.

Exam Tip: Explain the mechanism (slowing runoff, increasing absorption) not just the result (floods prevented).

Question 7. How does pollution affect rivers and aquatic life?
Answer: Pollution from plastic, sewage and chemicals makes river water dirty and unsafe for drinking and use. The pollutants harm fish, turtles and birds that live in and depend on the river for survival. Many aquatic animals may become sick, injured from plastic ingestion or suffocation, or may die from the contaminated water. Polluted rivers can also spread diseases to people who come in contact with the water or consume contaminated fish. Pollution kills aquatic plants that form the base of river food chains. When plants die, the entire aquatic ecosystem becomes unbalanced, leading to the death or migration of many species. Overall, pollution transforms rivers from life-supporting ecosystems into dangerous, dead or dying waterways.
In simple words: Pollution poisons water, kills fish and animals, spreads disease and destroys river life.

Exam Tip: Explain effects on different groups - aquatic life, human health, and ecosystem balance.

Question 8. What is a delta and how is it formed?
Answer: A delta is a low-lying area of land that forms where a river spreads into smaller streams before meeting the sea or ocean. Deltas are created through a natural process - as rivers reach the sea, they slow down and lose the power to carry their sediment (mud and sand). This sediment gets deposited at the river's mouth, building up over time into new land shaped like a triangle (which is why it is called a delta - after the Greek letter). Deltas like the one formed by the Godavari are extremely fertile because they contain rich soil deposited by the river. These fertile delta regions support thriving farming and fishing communities, making them some of the most productive and densely populated areas in any country.
In simple words: A delta forms where a river splits into streams near the sea and deposits soil, creating fertile land.

Exam Tip: Explain the formation process and mention why deltas are important (fertility, farming, fishing).

Question 9. Why is it important to reuse water at home?
Answer: Reusing water at home is important for several critical reasons. When we reuse water such as leftover vegetable-washing water to water plants, we help save fresh water that is needed for drinking and cooking. Reusing water reduces overall consumption in our homes, stretching limited water supplies further. Every water reuse action teaches family members sustainable living habits and the value of water conservation. Reusing water supports the idea that every single drop counts in protecting our environment and future water security. In regions facing water scarcity, household water reuse can make a real difference in ensuring adequate water availability. Simple reuse practices at home multiply across many households to create meaningful water savings at community and regional levels.
In simple words: Reusing water saves fresh water, teaches conservation, and helps our environment.

Exam Tip: Give specific examples of water reuse and explain both the immediate benefit (saving water) and broader impact (environmental protection).

Question 10. What are some steps we can take to keep rivers clean?
Answer: To keep rivers clean, we must never throw plastic or waste into rivers - instead, all garbage must go into proper dustbins. Using eco-friendly soaps and detergents that do not harm aquatic life is essential. We should fix leaky taps in our homes to stop water waste. Participating in organised clean-up drives where communities remove existing pollution from rivers is important. We must also educate family members, friends and others about the critical importance of saving water and protecting water bodies. These small individual actions, when practiced by many people, create significant collective positive impact on river health and cleanliness.
In simple words: Don't litter, use safe soaps, fix leaks, join clean-ups and teach others to protect rivers.

Exam Tip: List individual actions people can take immediately, showing practical, doable steps rather than large-scale infrastructure ideas.

Long Answer Type Questions: Class 5 EVS Chapter 2

Question 1. What are the different ways in which the river Godavari supports human life?
Answer: The Godavari river supports human life in many vital ways. It provides clean drinking water to towns and villages along its entire course, serving as a primary freshwater source for millions. Farmers rely on its water for irrigation to grow essential crops like rice, sugarcane and turmeric, supporting agricultural livelihoods. Many people earn income through fishing in the river and through tourism activities including boat rides and guided tours. The river holds deep religious and cultural importance - it is considered sacred in southern India and is the focal point of major festivals like Godavari Pushkaram. River water is carried through extensive canal and pipe networks to homes and schools. Dams built on the river generate hydroelectric power that supplies electricity to homes and industries. Through these interconnected benefits, the Godavari truly sustains the lives of millions of people across the region.
In simple words: Godavari gives drinking water, helps farming, provides jobs, is sacred in culture and produces electricity.

Exam Tip: Organize your answer into clear categories - water supply, agriculture, livelihoods, culture and electricity - for better structure.

Question 2. What problems occur when a dam is built, and how can they be solved?
Answer: Building a dam creates serious problems that affect people and nature. Displacement occurs as people living near the river lose their homes and agricultural land when water levels rise. Loss of forests happens when large areas of vegetation are submerged underwater. The natural river flow becomes blocked, preventing fish migration and disrupting the entire river ecosystem. Rivers become unhealthy with altered water quality and ecosystem balance. Solutions to these problems include proper rehabilitation programmes that provide relocated people with new homes, employment opportunities and financial support. Environmental impact assessments must be conducted before dam construction to study how it will affect nature and wildlife. Instead of large dams, governments can encourage building smaller check dams that cause less disruption. Alternative water management methods like rainwater harvesting can be promoted to meet water needs without massive dam projects. With careful planning that considers people and nature, dam projects can be managed to minimize negative impacts while providing necessary benefits.
In simple words: Dams cause displacement and ecosystem harm. Solutions include helping people resettle, studying impacts and building smaller dams.

Exam Tip: Create a clear two-part structure - Problems section and Solutions section - for easy marking.

Question 3. What can students do in daily life to save water and protect rivers?
Answer: Students can save water through simple daily habits. Turn off taps while brushing teeth or washing hands to prevent wasteful water loss. Help fix leaking taps with adult supervision, as even small drips waste large amounts of water over time. Reuse water left after washing fruits or rice by pouring it on plants instead of down the drain. Avoid throwing waste or plastic in drains or water bodies - always use proper dustbins. Spread awareness by talking to family and friends about why water saving matters and encouraging them to adopt water-saving habits. Use only the necessary amount of water for any task - do not let water run unnecessarily. These student actions, when practiced consistently, create lasting conservation habits and also inspire family members to value and protect water. Through this combination of personal practices and community awareness-raising, students can make a meaningful difference in protecting rivers and water security.
In simple words: Turn off taps, fix leaks, reuse water, don't litter and teach others about water conservation.

Exam Tip: Give six to eight specific, actionable steps that students can actually do - avoid vague concepts.

Question 4. How do fertilizers and waste affect rivers and aquatic life?
Answer: Fertilizers and waste harm rivers and aquatic ecosystems through multiple mechanisms. When fertilizers from farms wash into rivers, they provide excess nutrients that cause plants and algae to grow rapidly and uncontrollably. These unwanted plants and algae form a thick green blanket covering the water surface. This green blanket blocks sunlight from reaching the water below, preventing plants from photosynthesizing and reducing overall plant life. With less oxygen produced by plants and the decomposition process consuming available oxygen, fish and other aquatic animals find it increasingly difficult to breathe - many suffocate and die. Soap, chemicals and plastic waste pollute the water, making it unsafe for drinking, bathing or use. These pollutants accumulate in fish and other animals, poisoning them. Turtles, fish and birds lose their habitats and food sources as the ecosystem becomes unbalanced, leading to species decline or disappearance. The loss of biodiversity cascades through food chains, affecting entire ecosystems. Overall, fertilizer and waste pollution transforms healthy rivers into degraded, biologically dead waterways.
In simple words: Fertilizers cause algae overgrowth that blocks sun and oxygen. Chemicals poison water. Species die and disappear.

Exam Tip: Explain the chain of effects - fertilizers cause growth, growth blocks sun, reduced oxygen kills animals - showing cause and effect relationships.

Question 5. What safety steps should be taken before, during and after a flood?
Answer: Flood safety requires preparation before the event, quick action during it, and careful recovery afterward. Before a flood arrives, stay informed by listening to local news and weather alerts about flood warnings. Prepare an emergency kit containing first aid supplies, flashlight, batteries, important documents and other essentials. Know the safe evacuation routes from your area and plan alternative ways to leave if the main route becomes blocked. Leave your home promptly before flooding starts if authorities advise evacuation. In flood-prone areas, keep emergency items like a flashlight, ladder and rope easily accessible. During the actual flood, take immediate safety measures. Disconnect electricity and gas connections to prevent accidents, fires and explosions. Never walk or drive through flood water as it is deeper and more dangerous than it appears. Move to higher ground immediately - do not delay. Follow all evacuation orders given by local authorities and emergency services. Free any livestock and guide animals to safer locations. After the flood recedes, take careful recovery steps. Avoid contact with floodwater and contaminated food items as they carry disease. Do not return home until officials declare the area safe. Inform your family that you are alive and safe. When you do return, clean and disinfect all surfaces, food storage areas and eating utensils thoroughly to prevent waterborne diseases.
In simple words: Before - prepare and know escape routes. During - go to high ground safely. After - wait for clearance and clean everything.

Exam Tip: Structure clearly with Before/During/After sections containing specific bullet-point actions for each phase.

Topics-wise Study of Class 5 EVS Our Wondrous World Chapter 2

Using Water Wisely: A Shared Responsibility

Water is precious and limited. All of us must learn to use it wisely. The National Water Mission works across India to help people manage water properly and use it carefully. In some areas, Water ATMs have been introduced - these machines give clean water when you insert a card or coin. These machines help prevent wastage and teach people to value every drop. It is a smart way to save water and ensure fair sharing among everyone. We can practice simple daily habits like turning off the tap while brushing, fixing leaking taps, and using leftover water from washing fruits or vegetables to water plants. Even reminding family and friends to save water can make a big difference. These small habits can protect rivers, ponds and lakes around us and ensure that clean drinking water remains available for future generations. Truly, every drop counts.

Learning from the Past: Rivers Then and Now

Our elders often tell us how rivers were cleaner and fuller of water when they were young. Asking grandparents or parents to share stories about rivers or festivals like Godavari Pushkaram helps us understand rivers' deep value in our culture. In the past, people built houses and cities near rivers because they offered water for farming, drinking, washing and transport. Over the years, through careless habits, these rivers have become polluted, with plastic and sewage flowing into them. When we ask elders about river conditions during their childhood, many say they were used for swimming and fishing and had clear water. Now, many rivers are drying or becoming unsafe. It is important to reflect on what has changed since then and take action. Rivers are still important today - maybe even more important - and we must treat them with the same respect as in the past.

Protecting Our Rivers: Rules, Awareness and Innovation

If we could make one new rule to protect rivers, it should be to ban dumping of garbage and untreated waste into them. Strict fines and penalties would help stop this damaging habit. Thinking back to moments when we wasted water - like letting the tap run - we realize we must act differently now. Schools and communities can encourage children to design simple water filters using everyday materials like sand, gravel, charcoal and cotton. This teaches how to purify water affordably. Saving rivers also means keeping them clean, building better drainage and preventing floods during heavy rains. Towns should build rainwater harvesting systems and plant trees to stop soil erosion. Also, during summers, we must ensure there is enough water for everyone through careful planning. These steps are necessary to protect our rivers and make our homes and cities safe, clean and water-secure.

Imagining a City Near a River: Smart Steps for a Better Future

If I were planning a new city near a river, I would take many smart steps. First, I would make sure there are strict laws to keep the river clean by stopping plastic, sewage and chemicals from entering it. Second, to prevent floods during heavy rains, we would plant trees, build flood barriers and maintain proper drainage. We would also build homes away from flood zones and educate citizens on flood safety. To ensure there is always enough water for everyone, I would promote water-saving habits like reusing water, fixing leaks and turning off taps while brushing. Water ATMs would be placed across the city to provide clean water without waste. We would follow the example of the National Water Mission and teach people that even small actions make a big difference. A city built with water respect can thrive in every season.

How Does Practicing Class 5 EVS Chapter 2 Help Improve Understanding of Environmental Concepts?

Practicing Class 5 EVS Chapter 2 solutions and multiple-choice questions helps students understand important environmental topics in engaging and interactive ways. The chapter discusses the Godavari River and teaches how rivers originate, grow as tributaries join them and support life before flowing into the sea. When students solve questions based on this content, they strengthen their memory and improve their learning. These questions cover important topics like pollution, water conservation, dams, floods, wildlife and the role of rivers in human life. Multiple-choice questions help in quick revision and build exam confidence. More importantly, they improve critical thinking by offering close answer choices that require careful reading and analysis. By regularly solving multiple-choice questions, students stay engaged and develop deeper awareness of environmental protection and water-saving habits promoted throughout the chapter.