Across
- 2. molten rock that has erupted onto Earth's surface
- 3. where plates are colliding with each other
- 8. a depression in the ocean floor
- 10. plates are pulled apart at the mid-ocean ridges
- 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
- 13. the point on Earth's surface directly above the focus of an earthquake
- 15. the separating of continents by drifting across Earth's surface
- 19. the shaking, wave-like movement of the ground in an earthquake
- 20. when one plate sinks below another plate during a collision
Down
- 1. the process of new crust forming at the ocean ridges and spreading outwards
- 4. where plates are sliding parallel to each other but in opposite directions
- 5. a place where extremely hot material inside Earth erupts at the surface
- 6. isolated place away from plate boundaries where a lot of hot magma is collected
- 7. layer beneath Earth's crust
- 9. the centre of earth
- 12. a zone where Earth's crust and mantle are being pulled apart
- 14. the crust that forms the ocean floor
- 16. a huge wave in the ocean caused by an earthquake occurring on the seafloor
- 17. name for the crust and the upper mantle together; Earth's tectonic plates
- 18. the place below ground where an earthquake starts