Tectonics

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Across
  1. 2. The rigid outer layer of the Earth, made up of the crust and upper mantle.
  2. 3. The thick layer of semi-solid rock beneath the Earth's crust.
  3. 7. The process where one tectonic plate moves under another and sinks into the mantle.
  4. 8. waves: Waves of energy that travel through the Earth's layers during an earthquake.
  5. 9. The outermost layer of the Earth, made up of solid rock.
  6. 10. boundary: A plate boundary where two plates slide past each other horizontally.
Down
  1. 1. boundary A plate boundary where two tectonic plates move apart.
  2. 4. The point on the Earth's surface directly above the earthquake's focus.
  3. 5. currents Circular movements of molten rock in the mantle that drive tectonic plate movement.
  4. 6. An opening in the Earth's surface through which molten rock, ash, and gases escape.