Mars and review

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Across
  1. 3. The seasons on Mars are most like the seasons on this other inner planet.
  2. 5. These space rocks burn up in Earths atmosphere.
  3. 6. This planet is named after the Roman God of war.
  4. 8. The different shades of the moon are known as this.
  5. 11. Mercury, Venus, Earth and Mars are known as these.
  6. 14. Mars has a very thin one made of carbon dioxide, nitrogen and argon.
  7. 16. These huge space rocks created the many craters on the surface of Mars.
  8. 17. The ice on the poles of Mars are known as these.
  9. 19. The first inner planet.
  10. 20. The center of our solar system.
  11. 21. Mars has the largest known mountain and the largest known what?
  12. 23. This is found at the North and South poles of Mars.
  13. 24. How many phases of the moon there are.
Down
  1. 1. One of Mars moons P_ _ _ _ _
  2. 2. The largest canyon on Mars surface.
  3. 4. Planets made of rock are known as this.
  4. 6. Mars has two of these natural satellites.
  5. 7. This causes Mars to look red from Earth.
  6. 9. This planet is named after the Roman goddess of love.
  7. 10. The largest volcanic mountain on Mars.
  8. 12. There is evidence on the rocks of Mars that this once existed on its surface.
  9. 13. One of Mars moons D_ _ _ _ _
  10. 15. The outer layer of any terrestrial planet is known as this.
  11. 18. Mars core is made of this.
  12. 22. The path a planet takes around the sun.