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Class 4 Science Chapter 9 Test 1

Welcome to your Class 4 Science Chapter 9 Test 1

1. 
The Moon has ______ atmosphere.

2. 
The moon completes one round around earth in ______

3. 
The ebb and flow of the ________in the sky is due to its rotation around Earth.

4. 
The first planet that revolves closest to the sun is______.

5. 
______ is the brightest object appearing in the sky after the sun is the Moon.

6. 
The time taken by a planet to complete one orbit is called a/an ___period.

7. 
The circular path of a planet around the sun is called a/an______.

8. 
The natural satellites of the Earth are _______.

9. 
Which planets have maximum number of Moons?

10. 
The closest star to Earth is the _________.

11. 
The moon completes one round around earth in 27.3 days and since earth is also moving, so moon is completed for us in ______

12. 
Solar system consists of all the planets which ______ around the sun.

13. 
The sun is a_________.

14. 
All planets of solar system have moons except:

15. 
Moon complete one revolution around the Earth is about _______days.

16. 
The diameter of the moon is about _______km.

17. 
The third biggest thing appearing in the sky after the sun and moon is _____.

18. 
Complete moon is called ______

19. 
The sun is the __________ of solar system.

20. 
Among all the celestial bodies, ________ is the closest to the Earth.