Plate Tectonics Crossword

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Across
  1. 1. When a _____ fault moves, it causes the hanging wall to move down relative to the footwall.
  2. 3. The ______ contains most of Earth's mass.
  3. 7. _____ waves help scientists map Earth's interior.
  4. 9. The _____ hypothesis is used to predict earthquakes.
  5. 10. What is the plastic layer of the mantle on which pieces of the lithosphere move?
  6. 15. The bending of rock layers because of stress is called_____.
  7. 16. Alfred _______ developed the Continental Drift hypothesis
  8. 17. ______ is a measure of the strength of an earthquake.
  9. 18. The last seismic waves to arrive.
  10. 20. A funnel-shaped pit near the central vent at the top of many volcanoes.
Down
  1. 2. The outermost, rigid layer of the Earth.
  2. 4. What is the study of earthquakes?
  3. 5. What is it called when rocks break and slide past each other?
  4. 6. The center of the Earth is the ______.
  5. 8. A ______is an area of Earth's surface through which magma and volcanic gases pass.
  6. 11. What is the sinking of Earth's crust to lower elevations?
  7. 12. Another name for P- Waves.
  8. 13. The point on the Earth's surface directly above an earthquakes starting point.
  9. 14. A magnetic pole reversal is when Earth's ______ poles change places.
  10. 19. What is the rising of Earth's crust to higher regions?