Plate tectonics Crossword

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Across
  1. 2. Tectonics, The theory that pieces of Earth's lithosphere are in constant motion, driven by convection currents in the mantle.
  2. 3. Scale, A scale that rates an earthquake's magnitude based on the size of its seismic waves.
  3. 4. fault, A type of fault in which rocks on either side move past each other sideways with little up or down motion.
  4. 6. The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary.
  5. 8. Stress that squeezes rock until it folds or breaks.
  6. 12. Waves, Vibrations that travel through Earth carrying the energy released during an earthquake.
  7. 13. Wave, A type of seismic wave that compresses and expands the ground.
  8. 14. The shaking that results from movement of rock beneath Earth's surface.
  9. 17. Boundary, A plate boundary where two plates move past each other in opposite directions.
  10. 19. Fault, a type of fault where the hanging wall slides downward; caused by tension in the crust.
  11. 21. A break in Earth's crust where masses of rock slip past each other.
  12. 22. The point beneath Earth's surface where rock breaks under stress and causes an earthquake,
  13. 24. Stress that stretches rock so that it becomes thinner in the middle
Down
  1. 1. Fault, A type of fault where the hanging wall slide upward; caused by compression in the crust.
  2. 5. A device that records ground movements caused by seismic waves as they move through Earth.
  3. 6. Wave, A type of seismic wave that forms when P waves and S waves reach Earth's surface.
  4. 7. Boundary, A plate boundary where two plate boundaries move toward each other,
  5. 9. The point on Earth's surface directly above the earthquakes focus.
  6. 10. stress that pushes masses of rock in opposite directions, in a sideways movement.
  7. 11. Boundary, A plate boundary where two plates move away from each other.
  8. 15. Valley, A deep valley that forms where two plates move apart.
  9. 16. the block of rock that forms the lower half of a fault.
  10. 18. Scale, A scale that rates earthquakes according to their intensity and how much damage they cause at a particular place.
  11. 20. Wall, The block of rock that forms the upper half of a fault
  12. 23. Wave, A type of seismic wave that moves the ground up and down or side to side.