RBSE Solutions Class 5 EVS Chapter 12 Our Life Style and Climatic Changes

Page 124

Let's Discuss Healthy Lifestyle

Question. What scene do you see in these pictures?
Answer: In the first picture, we can see rural life, while the other picture shows urban life. This contrast highlights the different environments people live in.
In simple words: One picture shows village life and the other shows city life.

🎯 Exam Tip: When describing pictures, point out key differences like environment, activities, or structures visible in each scene.

Question. How are the activities of people, lifestyle and surrounding depicted in pictures?
Answer: The pictures show that rural life activities are calm, peaceful, happy, and stress-free, with no pollution. In contrast, urban life has a high population, busy lifestyles, noise pollution, and a lot of air pollution. The environment greatly impacts daily life.
In simple words: Rural life is calm and clean, but city life is busy and polluted.

🎯 Exam Tip: Focus on drawing clear distinctions between the two lifestyles shown, mentioning both positive and negative aspects.

Question. Which are the sign of urban pollution in the urban environment and what impact can it have on our lives?
Answer: In cities, pollution is caused by smoke from factories, outdoor air conditioner units, too many vehicles, and a lack of trees. These factors harm our environment and even affect the rain cycle. Such pollution can lead to many health issues for people.
In simple words: City pollution comes from factories, vehicles, ACs, and fewer trees, which harms our health and the environment.

🎯 Exam Tip: List specific sources of urban pollution and then explain their negative effects on both the environment and human health.

Question. What is the major difference between rural and urban life, how can a balance be made between the two?
Answer: Rural life is simple and close to nature, while urban life is fast-paced and offers many facilities. To create a balance, we need to provide job opportunities in villages and develop basic amenities there. It is also important to strengthen the connections between urban and rural areas. This helps reduce migration to cities.
In simple words: Village life is simple and natural; city life is fast and has many facilities. We can balance them by creating jobs and facilities in villages and connecting cities with rural areas.

🎯 Exam Tip: Highlight the core differences, then suggest actionable steps to bridge the gap and create a healthier coexistence between rural and urban settings.

Page 126

Activity-1

Question. Touch the concrete wall of your house in the afternoon. Is it hot? Now touch the mud wall (if nearby). Do you feel any difference?
Answer: In summer, walls made of brick, stone, and concrete stay very hot. However, a mud wall in our neighborhood remains cooler or less hot. This shows how different materials react to heat.
In simple words: Concrete walls get hot in summer, but mud walls stay cooler.

🎯 Exam Tip: For observation questions, clearly state your findings and any differences you noted, linking them to a simple explanation.

Activity-2

Page 127

Activity-3

Question 1. Make a list of packaged food items in your home and see how many of these items things are imported.
Answer: Do yourself.
In simple words: Make a list of packaged foods and check if they are from other countries.

🎯 Exam Tip: For "Do it yourself" questions, remember to actually perform the activity to gain a better understanding.

Question 2. Ask your grandparents, which food items they used to prepare and preserve at home in their time?
Answer: Our grandparents used to prepare and preserve many items at home, such as pickles, jams, flour snacks, and various homemade sweets and savories. They relied on traditional methods to keep food fresh for longer.
In simple words: Grandparents made and saved foods like pickles, jam, and snacks at home.

🎯 Exam Tip: When interviewing family, ask specific questions about methods and ingredients to get detailed answers.

Activity-4

Question 1. Adopt a tree and look after it.
Answer: Students can do this activity with the help of their teacher at school and their parents at home. Caring for a tree helps them understand environmental responsibility.
In simple words: Students can plant a tree and care for it with their teacher and parents.

🎯 Exam Tip: Participating in such activities firsthand helps in understanding concepts better than just reading about them.

Question 2. Why does cool wind blow during rain? Tell me.
Answer: Cool wind blows during rain for several reasons. Firstly, moisture in the air increases, making it feel cooler. Secondly, clouds block the sun's rays, causing the temperature to drop. Lastly, the rain itself is cold, and the wind blows faster, spreading this coolness. This combination makes rainy weather feel refreshing.
In simple words: Rain brings cool winds because of more moisture, blocked sunlight, lower temperatures, and cold, fast-moving rain.

🎯 Exam Tip: Explain all contributing factors clearly when asked for reasons, like moisture, sunlight, and wind speed for cooling during rain.

Page 128

Question. Categorize the following activities as environment friendly or unfriendly:
• Use of air conditioner
• Shopping from local market
• Consuming more electricity
• Use of bicycle
Answer:

🎯 Exam Tip: When categorizing, think about the resources used and the waste generated by each activity to determine its environmental impact.

RBSE Class 5th EVS Chapter 12 Question Answer - Practice Work

Fill in the Correct Answer by Choosing It-

Question 2. Which material were used to make old time houses?
(a) concrete and cement
(b) wood and straw made from soil
(c) iron and glass
(d) plastic and fiber
Answer: (b) wood and straw made from soil
In simple words: Old houses were built using natural things like wood, straw, and soil.

🎯 Exam Tip: Think about historical building materials to recall that natural, easily available resources were commonly used.

Question 3. What are the effects of eating more packaged food?
(a) Energy is saved
(b) health is improves
(c) pollution is increases
(d) water consumption reduce
Answer: (c) pollution is increases
In simple words: Eating more packaged food causes more pollution.

🎯 Exam Tip: Consider the entire lifecycle of packaged food, from production to disposal, to understand its environmental impact.

Question 4. Which effect is seen due to the increasing urban lifestyle.
(a) less energy consumption
(b) more trees and plants
(c) more pollution
(d) more rainfall
Answer: (c) more pollution
In simple words: A growing city lifestyle leads to more pollution.

🎯 Exam Tip: Urbanization often brings increased industry, traffic, and consumption, all of which contribute to higher pollution levels.

Page 8

Question. What are the environmentally difference between traditional houses and modern houses? Which is more environmental friendly and why?
Answer: Traditional houses were built using mud, wood, and straw, while modern houses use bricks, stones, and concrete. Modern houses absorb more heat, which raises the temperature, making people rely on air conditioners. This uses a lot of electricity and harms the environment. Traditional houses, being made of mud and other natural materials, stay cool naturally and help maintain a balance between summer and winter without needing air conditioners. Therefore, traditional houses are more environmentally friendly as they require less energy for cooling or heating.
In simple words: Traditional houses made of mud are better for the environment because they stay cool naturally without using electricity, unlike modern concrete houses.

🎯 Exam Tip: Focus on the materials and their thermal properties when comparing house types and their environmental impact.

Question 4. What are the effects of eating habits on climatic changes?
Answer: Our eating habits affect climate change in both positive and negative ways. In the past, people ate local, fresh food that was readily available and did not cause environmental pollution. Today, many people prefer packaged food. This type of food requires more energy for its production and transportation, consumes fuel, and uses plastic for packaging, all of which contribute to environmental pollution. Choosing local and fresh foods can significantly reduce this impact.
In simple words: Eating local fresh food is good for the climate, but eating packaged food uses more energy, fuel, and plastic, causing pollution.

🎯 Exam Tip: When discussing environmental effects of eating habits, think about the journey of food from farm to plate and the resources consumed at each step.

RBSE Class 5 EVS Chapter 12 Our Life Style and Climatic Changes Question Answer

Multiple Choice Questions :

Question 1. How a person feel by adopting healthy lifestyle?
(a) Energetic
(b) Stress free
(c) Free of disease
(d) All of the options
Answer: (d) All of the options
In simple words: A healthy lifestyle makes a person feel energetic, stress-free, and healthy.

🎯 Exam Tip: When multiple positive outcomes are listed, often "All of the options" is the correct answer if all options are indeed benefits.

Page 9

Question 3. What is the reason behind drought somewhere and flood somewhere?
(a) Balanced environment
(b) Climatic change
(c) Tree plantation
(d) All of the options
Answer: (b) Climatic change
In simple words: Climate change causes both droughts and floods in different places.

🎯 Exam Tip: Recognize climate change as a root cause for extreme weather events like droughts and floods.

Question 4. Which of the following work is according to environment?
(a) Eating local foods
(b) More tree plantation
(c) Saving electricity
(d) All of the options
Answer: (d) All of the options
In simple words: Eating local food, planting more trees, and saving electricity are all good for the environment.

🎯 Exam Tip: Consider which actions reduce consumption, promote natural processes, or support local sustainability when identifying environmentally friendly practices.

Question 5. Which one of the following work is opposite to environment?
(a) Mud house
(b) Use of air conditioner
(c) Use of Bicycle
(d) All of the options
Answer: (b) Use of air conditioner
In simple words: Using an air conditioner is not good for the environment.

🎯 Exam Tip: An environmentally opposite action typically involves high energy consumption or harmful emissions, like those from air conditioners.

Fill in the Blanks-

Question 3. Save ______ and ______ at home.
Answer: Save **water** and **electricity** at home. This helps conserve natural resources and reduce bills.
In simple words: We should save water and electricity at home.

🎯 Exam Tip: Focus on common household resources that can be conserved to complete such fill-in-the-blanks questions.

Question 4. The whole world is being effected by the ______.
Answer: The whole world is being affected by **climate change**. This global phenomenon impacts weather patterns, ecosystems, and human societies.
In simple words: Climate change is affecting the whole world.

🎯 Exam Tip: Understand major global environmental issues, as they are common topics for fill-in-the-blanks.

State the Following Statements Are True or False-

Question 1. Concrete houses absorb more heat and this decreases the temperature of entire city.
Answer: **False**. Concrete houses absorb more heat, which actually **increases** the temperature of the entire city, not decreases it. This phenomenon is known as the urban heat island effect.
In simple words: This statement is false because concrete houses make the city hotter, not cooler.

🎯 Exam Tip: Pay close attention to words like "increases" or "decreases" as they often determine the truth value of a statement about cause and effect.

Question 2. Houses made by mud, wood and straw maintain balance in both winter and summer.
Answer: **True**. Houses made from mud, wood, and straw are natural insulators, helping to keep the interior cool in summer and warm in winter. They adapt well to different weather conditions.
In simple words: This is true; mud and straw houses stay balanced in both hot and cold weather.

🎯 Exam Tip: Recall the properties of natural building materials and their ability to regulate temperature without external energy.

Question 3. The whole world is affected by climate change.
Answer: **True**. Climate change is a global issue, impacting every country and ecosystem in various ways. Its effects are felt worldwide.
In simple words: This is true; climate change affects everyone across the globe.

🎯 Exam Tip: Global environmental problems like climate change inherently affect the entire world, making such statements generally true.

Question 4. In earlier people use air conditioner in summer and heater in winters.
Answer: **False**. In earlier times, people did not use air conditioners in summer or heaters in winter as widely as today. They relied more on natural methods and traditional architecture for comfort. Modern technology has changed these practices.
In simple words: This statement is false; people in earlier times did not use ACs and heaters much.

🎯 Exam Tip: Consider the availability of technology in different historical periods when evaluating statements about past practices.

Match the Following Correctly-

Question. Match the following correctly:
Column 'A'
1. Concrete houses
2. Packaged food
3. Less trees
4. Healthy lifestyle
Column 'B'
(a) Less rainfall
(b) Energetic body
(c) Increasing temperature
(d) Increases environmental pollution
Answer:

🎯 Exam Tip: Carefully analyze each pair, thinking about cause and effect or direct association, to make the correct matches in such questions.

Very Short Answer Type Questions-

Question 1. What was made up of mud, wood and straw?
Answer: **Traditional (old) houses** were commonly made using mud, wood, and straw. These natural materials were readily available and provided good insulation.
In simple words: Old houses were made from mud, wood, and straw.

🎯 Exam Tip: Connect building materials to their historical context and environmental suitability for very short answer questions.

Question 2. What kind of food was eaten in olden time?
Answer: In olden times, people primarily ate **local and fresh food**. This food was often grown nearby and consumed shortly after harvesting, ensuring freshness and nutritional value.
In simple words: People in olden times ate food that was local and fresh.

🎯 Exam Tip: Think about food availability and preservation methods before modern technology when answering questions about past eating habits.

Question 3. What kind of food is liked to eat by modern people?
Answer: Modern people often prefer to eat **packaged food**. This type of food is convenient and ready-to-eat but can have environmental implications due to its processing and packaging.
In simple words: Modern people like to eat packaged food.

🎯 Exam Tip: Relate current food preferences to factors like convenience and availability in modern lifestyles.

Question 4. Which type of houses maintain balance in both summer and winter?
Answer: **Houses made up of mud, wood and straw** typically maintain a comfortable balance in both summer and winter. Their natural insulating properties help keep the interior cool in hot weather and warm in cold weather. These are often referred to as traditional homes.
In simple words: Houses made from mud, wood, and straw stay cool in summer and warm in winter.

🎯 Exam Tip: Focus on natural materials that offer good insulation without artificial cooling or heating for this type of question.

Question 5. With what problem the entire world is getting affected?
Answer: The entire world is getting affected by problems primarily linked to **less trees**. This leads to issues like climate change, loss of biodiversity, and altered rainfall patterns, impacting ecosystems globally.
In simple words: The whole world is affected by problems caused by having fewer trees.

🎯 Exam Tip: When asked about global problems, consider interconnected environmental issues, especially deforestation and its widespread impacts.

Question 7. Which kind of houses absorbs heat?
Answer: **Houses made up of concrete** are known to absorb a lot of heat. This property contributes to higher temperatures inside the house and in the surrounding urban areas, creating what is known as the "heat island effect."
In simple words: Concrete houses absorb a lot of heat.

🎯 Exam Tip: Recall that dark, dense materials like concrete tend to absorb and retain heat, making them warmer than lighter, more porous materials.

Question 8. What is happening due to climate change?
Answer: Due to climate change, we are seeing events like **droughts in some places and floods in others**. It also causes rising temperatures, changes in sea levels, and shifts in weather patterns worldwide, leading to unpredictable and extreme weather conditions.
In simple words: Climate change is causing droughts in some areas and floods in others.

🎯 Exam Tip: Focus on the most common and contrasting impacts of climate change, such as extreme water scarcity (droughts) and excess (floods).

Short Answer Type Questions-

Question 1. Write three activities of environmental friendly and against environment each.
Answer:
Three environmental friendly activities are:
• Planting trees
• Not using air conditioner unnecessarily
• Using bicycle
These actions help reduce our carbon footprint and preserve natural resources.
Three activities against environment are:
• Cutting trees
• Burning garbage
• Consuming packaged food
These activities contribute to pollution, deforestation, and waste generation.
In simple words: Planting trees, avoiding unnecessary AC use, and cycling are good for the environment. Cutting trees, burning garbage, and eating packaged food are bad.

🎯 Exam Tip: For each category, choose actions that clearly demonstrate a positive or negative impact on the environment, providing a good balance.

Question 2. What we have to do to save environment?
Answer: To save the environment, we must reduce extreme energy use and unnecessary transport. We should also lower our consumption of packaged food and stop cutting trees. Packaged food in particular is harmful because its production and transportation consume a lot of energy and fuel, and it creates plastic waste that increases environmental pollution. By making conscious choices, we can protect our planet.
In simple words: To save the environment, we should use less energy and transport, avoid packaged food, and stop cutting trees.

🎯 Exam Tip: When suggesting ways to save the environment, focus on practical actions related to energy, consumption, and conservation.

Long Answer Type/Essay Type Questions

Question 1. How did the olden houses not responsible for Heat island effect? Explain.
Answer: In modern cities, concrete houses absorb a significant amount of heat, which raises the overall temperature of the area. This is known as the 'Heat island effect'. However, in earlier times, houses were built using natural materials like mud, wood, and straw. These materials have excellent insulating properties that help regulate indoor temperatures, keeping homes cool in summer and warm in winter. Because these traditional houses did not absorb and retain excessive heat, they were not responsible for creating the 'Heat island effect'.
In simple words: Old houses made of mud and straw did not cause the 'Heat island effect' because they stayed cool naturally, unlike modern concrete houses that absorb a lot of heat.

🎯 Exam Tip: Emphasize the insulating properties of traditional materials versus the heat-absorbing nature of modern materials to explain the absence of the heat island effect.

Question 2. What are the major impacts of climate change and what can be measures to deal with it?
Answer: Climate change has several major impacts on the environment, including an increase in global temperatures, a rise in sea levels, and occurrences of droughts and floods in different regions. It also leads to a reduction in biodiversity. To deal with climate change, we can take several measures: reduce our use of air conditioners, save electricity and water at home, eat local and fresh food, plant as many trees as possible, and avoid unnecessary shopping. Each small step contributes to a healthier planet.
In simple words: Climate change causes higher temperatures, rising sea levels, droughts, floods, and less biodiversity. We can help by using less AC, saving water and electricity, eating local food, planting trees, and buying less.

🎯 Exam Tip: List both the environmental consequences of climate change and actionable steps individuals can take to mitigate its effects.

Key Points

• Everyone should adopt a healthy lifestyle. It makes a person energetic, stress free and free from disease.
• In earlier times, houses were made of mud, wood and straw, so they maintained a balance in both winter and summer.
• Today concrete houses increase the heat further and we have to spent more electricity to keep them cool.
• Concrete houses absorb more heat and this increases the temprature of the entire city. This is called 'Heat island effect'.