Topic 5 Plate Tectonics

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Across
  1. 2. a current caused by the rising of heated fluid and sinking of cooled fluid
  2. 3. a principle that states that younger rocks lie above older rocks if the layers have not been disturbed
  3. 5. waves of energy that travel through the Earth
  4. 9. A scale that rates an earthquake's magnitude based on the size of its seismic waves.
  5. 10. Sections of the Earth's crust that move due to convection currents.
  6. 11. A vent or fissure in the Earth's surface through which magma and gases are expelled
  7. 12. A break in the earth's crust
  8. 13. A plate boundary where two plates move past each other in opposite directions
  9. 14. A large landmass that contains all, or nearly all, of the existing continents.
Down
  1. 1. the gradual movement of the continents across the earth's surface through geological time.
  2. 4. A plate boundary where two plates move away from each other.
  3. 6. The shaking that results from the movement of rock beneath Earth's surface.
  4. 7. areas that are below sea level
  5. 8. A plate boundary where two plates move toward each other.
  6. 14. One plate going under another plate