CBSE Class 3 EVS Revision Worksheet Set 08

CBSE Class 3 EVS Practice Worksheets (112)-Revision

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Page 4

Question 1. Write’ A’ next to the activity that requires air ,‘W’ next to the activity that requires water and ‘AW’ that requires both air and water.

Answer:
We can label each activity based on what it needs:
* paragliding - 'A' (requires air)
* parasailing - 'AW' (requires both air and water)
* rafting - 'W' (requires water)
* water polo - 'W' (requires water)
* swimming - 'W' (requires water)
* hang glider - 'A' (requires air)
In simple words: We write W for water sports. We write A for air sports. We write AW for sports that use both water and air.

Exam Tip: Look at the picture carefully to see if the sport happens in the air, in the water, or both.

Question 2. Do you think water and air are important in our daily life? Why?
Answer: Yes, water and air are very important to us. We need air to breathe and live. We also need water to drink, cook, and wash.
In simple words: Yes, we need water and air. We must breathe air to live. We must drink water to stay alive.

Exam Tip: Give one clear reason for air and one clear reason for water in your answer.

Page 5

Question 1. Observe the picture and answer the following questions.

Answer:
(a) We can see two kinds of pollution in this picture. These are air pollution and water pollution.
(b) Smoke from big factories causes air pollution. Dirty waste from factories and trash thrown by people cause water pollution.
(c) We can stop pollution in these two ways:
1. We should plant more green trees to clean the air.
2. We must not throw garbage or dirty waste into our water bodies.
In simple words: The picture shows dirty air and dirty water. Factories and trash cause this. We can stop this by planting trees and keeping water clean.

Exam Tip: For part (a), name the pollutions you see clearly. For part (c), write two simple actions we can do to protect nature.