Forces that shape the Earth

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Across
  1. 5. Sudden shaking of the ground caused by movement along a fault
  2. 9. Force that pulls rocks apart, stretching Earth’s crust
  3. 11. Huge pieces of Earth’s crust that move slowly over the mantle
  4. 12. Point underground where an earthquake starts
  5. 13. Force that pushes rocks together, squeezing Earth’s crust
  6. 15. Instrument that records earthquake waves
  7. 16. Melted rock that reaches Earth’s surface
  8. 17. Force that causes rocks to slide past each other in opposite directions
  9. 18. Break in rock where one block is pushed up over the other, caused by compression
  10. 19. Movement of Earth’s plates that slowly changes the surface over time
  11. 20. Break in Earth’s crust where rocks move and earthquakes happen
Down
  1. 1. Plate boundary where plates collide
  2. 2. Plate boundary where plates move apart
  3. 3. General word for a push or pull on rock
  4. 4. Hot, melted rock beneath Earth’s surface
  5. 6. Plate boundary where plates slide past each other
  6. 7. Fault where rocks slide past each other sideways with little up-and-down movement
  7. 8. Opening in Earth’s crust where lava, ash, and gases come out
  8. 10. Break in rock where one block slides down compared to the other, caused by tension
  9. 14. Point on Earth’s surface directly above the focus
  10. 17. Energy wave released during an earthquake