Changing Earth Crossword.

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Across
  1. 4. The top layer of the earth
  2. 7. The only liquid layer of the earth
  3. 8. Two plates coming together like a mirage
  4. 9. Two plates sliding side by side
Down
  1. 1. Two plates moving away like a divorce
  2. 2. The process of wearing away rock
  3. 3. The process of breaking apart rock
  4. 5. It's like picking up and dropping off kids at school.
  5. 6. The hottest part of the earth
  6. 10. The second layer of the earth