Plate Tectonics

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Across
  1. 4. Liquid magma that reaches Earths surface
  2. 5. A dense sphere of solid iron and nickle
  3. 7. A volcano that is no longer active
  4. 9. The point on Earth's surface directly above an earthquakes focus
  5. 10. The hypothesis that the continents slowly move across Earths surface
  6. 11. A device that records movements caused by seismic waves
  7. 14. An earthquake that occurs after a larger earthquake
  8. 15. An opening that magma leaves a volcano
Down
  1. 1. A break or crack in Earths lithosphere along which the rock moves
  2. 2. A layer of molten iron and nickle that surrounds the Earth
  3. 3. The layer of hot, solid material between Earths crust and core
  4. 6. The layer of rock that forms Earths outer surface
  5. 8. A weak spot in the crust where magma has come to the surface
  6. 12. A type of seismic wave that moves the ground up and down or side to side
  7. 13. A giant wave usually caused by an earthquake