Science Assignment

3. molten rock below earth's surface
4. molten rock that has erupted onto earth's surface
6. isolated place away from plate boundaries where a lot of hot magma is collecting
8. the crust that forms the continents
10. wave the shaking wave-like movement of the ground in an earthquake
12. the rapid movement of the ground usually back and forth and up and down in a wave motion due to the movement of the tectonic plates
13. the place below ground where an earthquake starts
14. when one plate sinks below another plate during a collision
15. earth's outermost solid layer
17. the point on earth's surface directly above the focus of an earthquake

1. a depression in the ocean floor
2. a place where extremely hot material from inside the earth erupts at the surface
3. layer below earth's crust
5. a layer of 'plastic' semi-solid rock in the lower mantle on which earth's tectonic plates move
7. an instrument that detects the seismic waves from an earthquake
8. centre of the earth
9. a huge wave in the ocean caused by an earthquake occurring on the seafloor
11. name for the crust and the upper mantle together;earth's tectonic plates
16. a zone where earth's crust and mantle are being pulled apart
18. the process of continents breaking up, subsiding and allowing water in from the sea