Earth's crust

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Across
  1. 3. is round, like an orange, has a skin.
  2. 5. is a hole in Earth's crust.
  3. 8. the ocean sometimes make new islands.
  4. 10. has different pieces.
  5. 12. move very, very slowly.
  6. 13. In 1963, a volcano in the Atlantic Ocean made a new island.
Down
  1. 1. the crust is thick
  2. 2. it's thinner.
  3. 4. in Earth's crust exist different they are millions of years old, are often different
  4. 6. When two pieces of the crust move and meet
  5. 7. hot rock flies out from under the ground, and melted rock pours out over the ground.
  6. 9. is called skin.
  7. 11. moved and made mountains.