Across
- 3. Earth's "twin"
- 4. A gas giant with vertical rings
- 7. The glowing head of a comet.
- 10. A meteoroid that reaches Earth's surface
- 11. The beginning formation of planets caused by bits of matter colliding and clumping together.
- 15. _________ planets formed from metals and silicate minerals that can withstand the heat of the sun.
- 17. Jovian planets are _______ giants.
Down
- 1. This planet was reclassified as a dwarf planet.
- 2. The second hottest terrestrial planet
- 5. Jupiter's great red spot is a ___________.
- 6. Rocky and metallic material held together by frozen gasses.
- 8. Planets make an ___________ orbit around the Sun.
- 9. Contrary to popular belief, all of the Jovian planets have _______, not just Saturn and Uranus.
- 12. Mercury has no __________ and is very close to the sun making it very hot.
- 13. Recent impact craters on the moon were likely caused by ________.
- 14. The diameter of _________ planets are much greater than terrestrial planets.
- 16. Terrestrial planets are ________ and Earth-like.