CBSE Class 5 EVS Journey of a River Worksheet Set 02

Fill in the Blanks

Question. Rivers pass through forests abundant in __________.
Answer: wildlife
Explanation: River water and lush green trees provide food, shelter, and cool drinking water for forest animals.

Question. The Ganges river dolphin is __________ and uses sound to navigate its way.
Answer: blind
Explanation: Because muddy river water makes it hard to see, this dolphin makes clicking sounds that bounce off objects so it can "see" where to swim.

Question. The water collected behind a dam is called a __________.
Answer: reservoir
Explanation: A reservoir is like a giant man-made pond where extra river water is stored until it is needed.

Question. There exist more than __________ dams in India.
Answer: 900
Explanation: India has built many hundreds of dams to save water for city homes and generate electricity.

Question. Rivers supply water to many towns and __________.
Answer: villages
Explanation: Towns and countryside villages both rely on rivers for fresh drinking water and for growing crops.

True or False

Question. Drought happens when a river has very little water.
Answer: True
Explanation: When rain fails and rivers dry up, the land turns parched and crops wither away in a drought.

Question. The Ramayana and the Puranas mention tales about the river.
Answer: True
Explanation: Ancient Indian books describe sacred stories and events that took place along holy rivers like the Godavari.

Question. Floating leaves, fins, or long roots help living beings thrive in water.
Answer: True
Explanation: Fins help fish paddle easily, while broad floating leaves keep water lilies up in the sunshine.

Question. We should waste water because dams store enough of it.
Answer: False
Explanation: Fresh water is limited, and we must always use it carefully without letting taps run wastefully.

Question. Freshwater sources are shelter to many plants and animals.
Answer: True
Explanation: Many types of fish, frogs, turtles, and water weeds need sweet freshwater to survive.

Match the Following

Question. Match the following pairs in Column A with their correct descriptions in Column B:

Answer:
1. Trimbakeshwar — i. Source of Godavari
2. Bhupen Hazarika Setu — ii. More than 9 kilometres long
3. Ecotourism — iii. Exploring nature without harming
4. Dam — iv. like a giant wall
5. Fertilisers — v. Covers river surface like a green blanket
Explanation: The Godavari starts at Trimbakeshwar. The Bhupen Hazarika Setu is over 9 km long. Ecotourism means enjoying nature peacefully. A dam is a giant wall holding water, and farm fertilisers wash into rivers and cause green weed blankets to form.

Vocabulary Activity - "Guess the Word"

Question. Name the tallest railway arch bridge in the world.
Answer: Chenab Rail Bridge
Explanation: Built over the Chenab River in Jammu and Kashmir, this bridge stands higher than the Eiffel Tower.

Question. Unscramble this term for coastal trees: GREVONAM
Answer: Mangrove
Explanation: Mangrove trees have special roots that stand tall in salty coastal waters to protect the shore from crashing waves.

Question. A river that flows all year through:
Answer: Perennial river
Explanation: A perennial river never dries up completely because it gets water from snowmelt and rain throughout the year.

Question. Unscramble this river-mouth landform: ALDTE
Answer: Delta
Explanation: A delta is a fertile triangle of land formed where a slowing river splits into tiny streams before reaching the sea.

Question. Name India’s longest river crossing.
Answer: Bhupen Hazarika Setu
Explanation: This bridge connects Assam and Arunachal Pradesh over the Lohit River and measures over 9 kilometers long.

Question. Unscramble this water channel: ALNAC
Answer: Canal
Explanation: A canal is a man-made waterway dug through the ground to carry river water straight to farm crops.

Question. The structure that halts a river’s flow:
Answer: Dam
Explanation: A dam is a huge concrete wall constructed to hold river water so we can save it and make electricity.

Question. Unscramble this action that dirties water: LLUTEOP
Answer: Pollute
Explanation: To pollute means to make water dirty and unsafe by dumping plastic, garbage, or chemicals into it.

Question. Name the small rivulets joining a river.
Answer: Tributaries
Explanation: Tributaries are smaller streams and rivers that flow into a main river to make it bigger and stronger.

Question. Unscramble this northeastern Indian state: SAMAS
Answer: Assam
Explanation: Assam is a green state in northeast India through which the mighty Brahmaputra River flows.

Question. Name the world’s biggest river island.
Answer: Majuli
Explanation: Majuli is a large, inhabited island sitting right in the middle of the Brahmaputra River in Assam.

Question. Place where a river joins the sea:
Answer: Delta (or River mouth)
Explanation: The final destination of a river is the sea, where it deposits soft mud and splits into branches.

Question. Unscramble this tiny moving waterway: MEASTR
Answer: Stream
Explanation: A stream is a small, narrow flow of freshwater that joins other streams to create a river.

Question. Name one of the greatest earthen dams in the world.
Answer: Hirakud Dam
Explanation: Hirakud Dam in Odisha is built of soil, stone, and concrete and stretches for many kilometers.

Question. Unscramble this coastal eastern state: ISADOH
Answer: Odisha
Explanation: Odisha is an Indian state along the Bay of Bengal where the Mahanadi River empties into the ocean.

Question. Name a machine that dispenses clean water using a card or coin.
Answer: Water ATM
Explanation: When you insert a coin or swipe a smart card, a water ATM fills your bottle with pure drinking water.

Question. Unscramble this word for forest creatures: LILIDWIFE
Answer: Wildlife
Explanation: Wildlife means all the animals, birds, and insects that live freely in natural forests.

Question. Name the dam that impacts the Godavari River.
Answer: Polavaram Dam
Explanation: Polavaram is a large dam built on the Godavari River in Andhra Pradesh to irrigate farms and supply water.

Questions / Short Question Answers

Question. Why are rivers vital for wildlife?
Answer: Rivers are vital because wild animals need freshwater every day to drink and survive. Dense forests along riverbanks provide shade, fruit, and hunting grounds for animals like deer and tigers.
Explanation: Animals cannot buy bottled water, so rivers are their only source of fresh drinking water in the wild.

Question. How can we help keep rivers unpolluted?
Answer: We can keep rivers clean by not dumping garbage or plastic bags into water bodies, using eco-friendly soaps, and ensuring that dirty sewage and factory chemicals are treated before release.
Explanation: Keeping trash out of waterways ensures that river water stays pure for drinking and safe for fish.

Question. Explain why rivers flood and what impacts floods have on life.
Answer: Rivers flood when excessive rainfall or rapid snowmelt rushes into riverbeds faster than the channel can drain. Floods destroy homes, wash away bridges, drown crops, and can spread waterborne illnesses after the water recedes.
Explanation: When too much rain falls at once, water bursts over river edges and causes damage across fields and towns.

Question. What happens to people when there is no water for a long time?
Answer: When there is no water for a long period, farming stops, wells dry up, and families suffer from severe thirst and hunger. Many people are forced to leave their ancestral villages to look for water elsewhere.
Explanation: Without water, humans cannot cook or drink and animals cannot survive, making life impossible.

Question. Why do people travel to Nashik near the Godavari River?
Answer: People visit Nashik to pray at historic temples and take a holy dip in the sacred waters of the Godavari River, especially during the famous Godavari Pushkaram festival.
Explanation: Devotees believe that bathing in the holy waters of the Godavari at Nashik washes away sins and brings blessings.

Question. Name two ways people can conserve water at home.
Answer: 1. Turn off the tap while brushing teeth or washing hands.
2. Fix dripping taps quickly and reuse water from rinsing fruits to water house plants.
Explanation: Turning off running taps and fixing leaks prevents buckets of clean water from going down the drain.

Question. What is the main use of the water from the Godavari River?
Answer: The primary uses of Godavari water are supplying drinking water to cities and villages, irrigating agricultural fields to grow food crops, and running turbines in dams to generate electricity.
Explanation: Farmers use Godavari water to grow crops, and families depend on it for drinking and household chores.

Question. Write two negative effects of building dams.
Answer: 1. They submerge large tracts of forests and villages under deep water.
2. They alter the natural flow of rivers, preventing fish from migrating and disrupting river ecosystems.
Explanation: Dams trap water in huge pools, which drowns trees and prevents fish from swimming freely downstream.

Question. Explain how dams help people and also cause troubles.
Answer: Dams help people by storing water for hot dry summers, irrigating farms, and producing electricity without burning coal. However, they also cause troubles because creating huge reservoirs floods villages, forces families to relocate, and destroys forest habitats.
Explanation: While dams provide electricity and drinking water, building them takes away land from villagers and wild animals.

Question. Why is it important to protect water every day?
Answer: Freshwater makes up only a tiny fraction of the water on Earth. Conserving water daily guarantees that our families, animals, and future generations will always have enough clean water to survive.
Explanation: Clean drinking water is limited, so saving it every day protects our future from running out of water.

Question. Explain the many ways in which rivers assist human life.
Answer: Rivers supply freshwater for drinking, cooking, bathing, and running household chores. They provide irrigation water for farmers to grow grain, support fishing jobs, allow cargo boats to travel, and help generate hydroelectric power.
Explanation: Rivers give us the water we drink, help farmers grow the food we eat, and give fishermen a way to earn a living.