Tectonics and The Earth

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Across
  1. 4. - The name for the separating of continents as they drift across the earth.
  2. 5. - The name for the solid outermost layer of Earth.
  3. 8. - They are waves of energy that travel through the earth (& sea), they are caused by the movement of tectonic plates.
  4. 9. - The layer of earth between the core and the crust.
  5. 11. - The device that measures and monitors seismic waves.
  6. 12. - Long wave of energy created by an earthquake near or on the ocean floor.
  7. 13. - Long depression in the earth formed by the movements of tectonic plates.
  8. 15. - Place where tectonic plates slide sideways next to each other.
  9. 16. - When plates move away from each other in opposite directions it is a ___________.
  10. 17. - The crust that is beneath the ocean, it is often thinner then continental crust.
Down
  1. 1. - When a new crust is formed this is the boundary between plates.
  2. 2. - The earth's crust is broken up into these pieces of crust.
  3. 3. - The place inside the earth's crust where an earthquake originates from.
  4. 5. - The place where [tectonic] plates collide with each other.
  5. 6. - The place directly above the focus of an earthquake, on the earth's surface.
  6. 7. - Mountain-shaped place where lava and ash erupt from the earth.
  7. 9. - Molten rock under the earth's crust.
  8. 10. - When the ground shakes due to seismic activity.
  9. 14. - When one tectonic plate slides under another.
  10. 18. - The centre of the planet we inhabit.