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Class 4 Science Chapter 9 Test 1

Welcome to your Class 4 Science Chapter 9 Test 1

1. 
________ is the largest planet in the solar system.
2. 
The sun is the __________ of solar system.
3. 
Solar system consists of all the planets which ______ around the sun.
4. 
The circular path of a planet around the sun is called a/an______.
5. 
The moon completes one round around earth in 27.3 days and since earth is also moving, so moon is completed for us in ______
6. 
The distance between Earth and Moon is about _______km.
7. 
The third biggest thing appearing in the sky after the sun and moon is _____.
8. 
On the first day of lunar month, the very narrow shape of Moon is known as______.
9. 
The diameter of the moon is about _______km.
10. 
The Moon has ______ atmosphere.
11. 
The first planet that revolves closest to the sun is______.
12. 
Among all the celestial bodies, ________ is the closest to the Earth.
13. 
The Earth and the Moon, other planets, comets and asteroids etc. revolve around the sun due to the ___________of the sun.
14. 
The ebb and flow of the ________in the sky is due to its rotation around Earth.
15. 
The moon completes one round around earth in ______
16. 
Complete moon is called ______
17. 
The time taken by a planet to complete one orbit is called a/an ___period.
18. 
The closest star to Earth is the _________.
19. 
______ is the brightest object appearing in the sky after the sun is the Moon.
20. 
Moon complete one revolution around the Earth is about _______days.