Plate Tectonics

1. The place below the ground where an earthquake starts
5. is a fast-moving current of deadly hot gas and volcanic matter
6. a major area in the basin of the Pacific Ocean where many earthquakes and volcanic eruptions occur.
9. basaltic lava rock ejected as fragments from a volcano, typically with a frothy texture
12. Chain of islands formed at the edges of colliding tectonic plates where on plate subducts
13. Boundary where plates are colliding
14. is a continental transform fault that extends roughly 1,200 kilometers through California
16. When continents separate and drift
18. a supercontinent that existed during the late Paleozoic and early Mesozoic eras

2. New crust being formed at the ocean ridges and spreading outwards
3. Process of continents breaking up, subsiding and letting the sea in
4. Isolated place away from plate boundaries, where a lot of hot magma is being created
7. A huge wave in the ocean caused by an undersea earthquake
8. An instrument for detecting the seismic waves from an earthquake
10. a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapour, and gas are or have been erupted from the earth's crust.
11. Areas where one crust is sinking below another crust
15. The point on the Earth's surface directly above the focus
17. hot fluid or semi-fluid material below or within the earth's crust