4. ComparisonsMercuryVenusMars AA $ 200 $ 200$200 $400 $ 400$400 $600 $ 600$600 $ 600 $800 $ 800$800 $ 800 $ 1000$1000 $ 1000 $ 1000

5. $200 Mercury What planet’s size is between the size of the moon and Mars?

6. $400 Phases Mercury and the moon both have _____________ due to the fact the sun lights only a portion of the surface from our viewpoint.

7. $600 Similar size, density and surface gravity How are Venus and Earth alike?

8. $800 Almost the same How does Mars’ tilt on its axis compare to ours?

9. $1000 Venus has a thick cloud cover that prevents us from easily seeing the surface. We use radar to map the surface. Mars atmosphere is thin so we can see surface detail from Earth. We have landed spacecraft on Mars, whereas spacecraft on Venus have been short lived. Why do we know about the surface of Mars vs. Venus?

10. $200 It is so close to the sun. Why can’t we view Mercury from Earth?

11. $400 The surface of the moon Mercury’s surface most resembles?

12. $600 It has no atmosphere to moderate temperatures Why is Mercury hot during its day and so cold during its night?

13. $800 It’s rotation is 2/3 as long as it’s year (tidal resonance) How does Mercury’s rotation relate to it’s revolution?

14. $1000 The interior cooling and shrinking The scarps on Mercury are formed from?

15. $200 LargeShield volcano on Venus Maxwell Mons is a

16. $400 Raised the temperature by hundreds of degrees celsius What has the greenhouse effect done on Venus?

17. $600 A continent (plateau) What is Aphrodite Terra?

18. $800 What is the composition of the clouds of Venus? Sulfuric Acid

19. $1000 It’s Slow Rotation Why does Venus not have a magnetic field?

20. $200 It is farther away, less reflective Why does Mars appear fainter in the night sky than Venus?

21. $400 Phobos and Deimos Name the two moons on Mars?

22. $600 24 hours 36 minutes How long is a day on Mars?

23. $800 Valles Marineris and Olympus Mons What is the Solar Systems greatest Canyon and greatest volcano?

24. $1000 Runoff channels, recent mudflows, sedimentary rock formed under water. It is also frozen in the polar ice caps and perma frost What evidence is there that water existed on Mars?