Across
- 2. the point on Earth's surface directly above the focus of an earthquake
- 5. mountains formed by crust crumpling upwards as plates collide
- 6. an instrument that detects the seismic waves from an earthquake
- 7. where plates are moving apart from each other in opposite directions
- 9. a chain of islands formed at the edges of colliding tectonic plates that where one plate subducts
- 12. molten rock that has erupted onto the Earth's surface
- 13. the separating of the continents by drifting across Earth's surface
- 14. isolated place away from plate boundaries where a lot of magma is collecting
- 16. molten rock below the earth's surface
- 17. the center of Earth
- 19. layer beneath the earth's crust
Down
- 1. name for the crust and the upper mantle together; Earth's tectonic plates
- 3. a deep channel in the ocean floor where crust is sinking downwards
- 4. the place below the ground where and earthquake starts
- 6. when one plate sinks below another plate during collision
- 8. a place where extremely hot material from inside the earth erupts at the surface
- 10. a layer of 'plastic' semi-solid rock in the lower mantle on which Earth's tectonic plates move
- 11. 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
- 15. a huge wave caused by an earthquake occurring on the sea floor
- 18. a zone where Earth's crust and mantle are being pulled apart