Page 153 - Volt Elevate The World Around Us Book 4

Flex Your Brain

A. Choose the correct answer.
1. From which direction does the sun rise?

(a) North (b) South
(c) East (d) West
2. What are clouds made of?

(a) Dust (b) Tiny drops of water or ice crystals
(c) Smoke (d) Sand
3. Why is a rainbow formed?

(a) Reflection (b) Dispersion of light
(c) Absorption (d) Shadows
4. When did Chandrayaan-3 successfully land on the moon?

(a) 2008 (b) 2019
(c) 2022 (d) 2023

B. Write True or False. Also rectify the incorrect statements.
1. Shadows are always coloured like the object. ____________

2. The atmosphere protects us from harmful ultraviolet rays. ____________
3. The moon produces its own light. ____________

4. Stars twinkle because their light passes through moving
air in the atmosphere. ____________

C. Match the following columns.

Column A Column B
1. Noon (a) Appears after rain

2. Rainbow (b) The sun is highest
3. Horizon (c) Indian moon mission
4. Chandrayaan (d) Patterns of stars
5. Constellations (e) Line where earth and sky meet

D. Answer the following questions.
1. Why is the sun important for life on Earth?
2. How are clouds formed?

3. Why does the sky look blue during the day?
4. What are the different phases of the moon?
5. Write a short note on India’s Chandrayaan-3 mission.

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