Tectonic Plates

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Across
  1. 3. a boundary where plates come together
  2. 6. is a wave produced by an earthquake
  3. 7. when magma reaches the surface it is called this
  4. 9. is a molten mixture of rock-forming from the mantle
  5. 10. the sinking movement of ocean floor
  6. 12. a boundary where plates move apart
  7. 15. pulls on and thins Earth's crust
  8. 16. dead or a volcano that poses little threat
  9. 17. squeezes rock until it bends or breaks
  10. 18. is an area with lava independent of a plate boundary
Down
  1. 1. is a sleeping volcano
  2. 2. are the more immediate threat
  3. 4. shaking and trembling from plates moving
  4. 5. when rock is being pushed in two opposite directions
  5. 8. is a break in the rock of Earth's crust or mantle
  6. 11. a boundary where plates slip past each other
  7. 13. is a structure that forms in Earth's crust
  8. 14. the force that acts on rock to change its shape