NAME

CLASS

DATE

1. How many planets are in our Solar System?

5 8 12 9

2. What is in the Inner Solar System?

3. What is in the Outer Solar System?

4. What type of orbit are the planets to the Sun?

5. What percentage of nitrogen and oxygen is the Earth made up of?

6. What two gases make up the Sun's composition?

7. The surface of the Sun is called .

8. Except for the Sun and the Moon, Venus is the brightest object in the sky?

True

False

9. What is the greenhouse effect?

10. Mars is known as the God of what?

11. Mars is not easily visible with the unaided eye?

True

False

12. Jupiter has four times as much mass as all the other planets combined.

True

False

13. Jupiter is about 90% and 10% .

14. is the sixth planet from the sun and the second largest.

15. confirmed the existence of puzzling radial in homogeneities in the rings called "spokes" which were first reported by amateur astronomers.

16. Like other gas planets, Uranus has .

17. What is the only spacecraft that visited Uranus and when?

18. Neptune's most prominent feature in the southern hemisphere was what?

19. Neptune can not be seen by binoculars.

True

False

20. Pluto is also known as what?

21. Pluto is the second most contrast body in the Solar System.

True

False

22. is the closest planet to the Sun and the eighth largest.

23. Mercury actually has a very thin atmosphere consisting of atoms blasted off its surface by what?