Plate Tectonics

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Across
  1. 2. all the continents connected together as a supercontinent
  2. 4. Earth's continents were once joined together like a completed jigsaw puzzle. Then a force pulled them away from each other
  3. 5. a scientific theory that Earth's crust is made of moving plates
  4. 6. a scientist who examines rocks to find out about Earth's history and structure
  5. 8. deep cracks in Earth's crust
Down
  1. 1. as the ocean floor grows wider, the continents move farther apart
  2. 3. is a squeezing or a pushing together of the crust
  3. 7. when one plate rubs past another plate