1. 365 1/4 days
2. The Sun
3. Pluto
4. Jupiter
5. Pluto
6. Pluto
7. Mercury
8. Saturn
9. Venus
10. Jupiter, Saturn, Uranus and Neptune
11. Venus
12. Mars
13. Mercury
14. Further the planet from the Sun, the longer it takes for one complete orbit
15. Asteroids.  They large 'chunks' of rock orbiting the Sun.
16. Further the planet from the Sun, the colder it gets
17. The Sun's gravitational pull
18. An ellipse
19. Mercury, Venus, Earth and Mars
20. The inner planets are much closer to the Sun and therefore they receive the most heat
21. It looks bigger from Mercury
22. It is a long distance away and is the dimmest and the smallest planet.

Back