Plate Tectonics

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Across
  1. 2. When two tectonic _______ collide they can cause earthquakes.
  2. 6. The area where two plates collide and one goes beneath the other and is destroyed.
  3. 8. These are mainly formed from transform boundaries.
  4. 10. Formed from Cementation and Compaction
  5. 11. A crack in the earth, found at subduction zones.
  6. 13. The Earth’s lithosphere is broken up into many _____________.
  7. 15. Melted rock above ground.
  8. 18. An action that occurs at all boundaries.
  9. 19. This can cause subduction zones.
  10. 20. This is the thinnest layer of the Earth.
Down
  1. 1. Formed from cooling magma.
  2. 3. Two plates moving apart makes a ______ boundary.
  3. 4. The _____ is denser than the continental plates.
  4. 5. The less dense plate.
  5. 7. This is the thickest layer of the Earth.
  6. 9. The first hundred kilometers of the Earth is called ______.
  7. 12. Formed from heat and pressure.
  8. 14. A formation where two plates fold
  9. 16. Spews ash and magma.
  10. 17. Earthquakes and faults are mainly made at this boundary.