1. The Sun
The Earth
Terrestrial
Planets
Jovian
Planets
The Solar
System
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2. This layer of the sun can only be seen during total solar eclipses.

3. What is the corona?

4. The sun is composed mainly of this gas.

5. What is hydrogen?

6. The sun produces energy through this process.

7. What is nuclear fusion?

8. This inner portion of the sun is the hottest region in our star.

9. What is the core?

10. These dark areas on the chromosphere are regions of cooler temperatures.

11. What are sun spots?

12. This causes the seasons on Earth.

13. What is the tilt of the Earth’s axis?

14. On this day, the sun’s rays shine directly over the equator.

15. What is an equinox?

16. This daily periodic rise and fall of the oceans is caused by the pull of gravity from the moon and the sun.

17. What are tides?

18. During its early molten phase, the Earth was too hot to have one of these.

19. What is an atmosphere?

20. This property of matter caused the Earth to differentiate into several layers.

21. What is density?

22. Terrestrial planets have few of these.

23. What are moons?

24. Terrestrial planets do not have these surrounding their equators.

25. What are ring systems?

26. In comparing sizes, terrestrial planets are this.

27. What are small planets?

28. In comparing density, terrestrial planets are this.

29. What is more dense?

30. This was the first manned landing on Earth’s moon.

31. What is Apollo 11?

32. These are the Jovian planets.

33. What are Jupiter, Saturn, Neptune and Uranus?

34. If Saturn would fit in your bath tub, it would do this.

35. What is float?

36. We believe the Jovian Planets have this at their centers.

37. What is a small rocky core?

38. The best images of the Jovian planets have been taken with these probes.

39. What are the Voyager space probes?

40. The Jovian planets are also called this.

41. What are Gas Giants?

42. This is the theory that describes the formation of the Solar System.

43. What is the solar nebular theory?

44. Our Solar System is located in this galaxy.

45. What is the Milky Way?

46. Long period comets are believed to come from this region.

47. What is the Oort Cloud?

48. Pluto is a dwarf planet located in this region on the fringe of the solar system beyond Neptune.

49. What is Kuiper belt?

50. It is believed that a planet should have been formed in this region, located between Mars and Jupiter.

51. Where is the asteroid belt