The Inner Planets

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Across
  1. 4. atmosphere traps heat in a process called
  2. 6. another name for the four inner planets
  3. 7. currently has ice, but may have had liquid water in the past
  4. 8. Latin word for "Earth"
  5. 9. small, dense and have rocky surfaces
  6. 10. has liquid water and atmosphere
Down
  1. 1. inner planets differ in size, distance from sun and
  2. 2. closest planet to the sun
  3. 3. rotates from east to west
  4. 5. Mars atmosphere is 95%