Plate Tectonics

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Across
  1. 3. A plate boundary where two plates move away from each other.
  2. 4. The material that forms Earths hard surface.
  3. 6. A break in the earths crust where slabs of rock slip past each other.
  4. 7. A deep valley that forms where two plates move apart.
Down
  1. 1. A plate boundary where two plates move apart.
  2. 2. plate boundary where two plates move towards each other.
  3. 5. The hypothesis that the continents slowly moved across earths surface.