Plate Tectonics Crossword
Across
- 2. a place where extremely hot material from inside Earth erupts at the surface
- 4. molten rock that has erupted onto Earth's surface
- 5. older crust is pushed below new ocean crust and squeezes the plates sideways
- 6. name for the crust and the upper mantle together; Earth's tectonic plates
- 7. when one plate sinks below another plate during a collision
- 10. a longitudinal seismic wave that travels fast through Earth
- 13. a huge wave in the ocean caused by an earthquake occurring on the seafloor
- 16. a layer of 'plastic' semi-solid rock in the lower mantle on which Earth's tectonic plates move
- 17. the place below ground where an earthquake starts
- 18. a depression in the ocean floor
Down
- 1. molten rock below Earth's surface
- 3. the crust that forms the ocean floor
- 7. plates are pulled apart at the mid-ocean ridges
- 8. the point on Earth's surface directly above the focus of an earthquake
- 9. layer beneath Earth's crust
- 11. the process of continents breaking up, subsiding and allowing in water from the sea
- 12. the rapid movement of the ground, usually back and forth and up and down in a wave motion, due to the movement of tectonic plates
- 14. isolated place away from plate boundaries where a lot of hot magma is collected
- 15. a chain of islands formed at the edges of colliding tectonic plates where one plate subducts