Tectonic Plates

3. Molten rock that has erupted onto Earth’s surface.
5. The process of continents breaking up, subsiding and allowing in water from the sea.
6. plate, Section of Earths crust that moves about on Earth’s surface.
9. Molten rock below Earth’s surface.
11. A zone where Earths crust and mantle are being pulled apart.
12. A layer of “plastic” semi-solid rock in the lower mantle on which Earths tectonic plates move.
16. The place below ground where an Earthquake starts.
18. A place where extremely hot materials from inside Earths erupts at the surface.
19. Earths outermost solid layer.

1. A huge wave in the ocean caused by an earthquake occurring on the sea floor.
2. An instrument that detects the seismic waves from an earthquake.
3. Name for the crust and upper mantle together; Earths tectonics plates.
4. Where one plate sinks below another plate during a Collison.
7. Layer beneath Earth’s crust.
8. 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.
10. The centre of Earth.
13. A depression in the ocean floor.
14. trench, A deep channel in the ocean floor where crust is sinking downwards.
15. The point on Earth’s surface directly above the focus of an earthquake.
17. mountain, Mountains formed by crust crumpling upwards as plates collide.