Year 9 EES

6. where plates are sliding parallel to each other in opposite directions
7. molten rock that has erupted onto Earth's surface
9. the place below ground where an earthquake starts
10. isolated places away from plate boundaries where a lot of hot magma is collecting
12. the theory that Earth's crust is cracked into many large pieces that move
13. where plates are moving apart in opposite directions
14. an instrument that detects the seismic waves from an earthquake
15. molten rock below Earth's surface
16. patterns of magnetism trapped in rocks on each side of plate boundaries

1. the process of continents breaking up, subsiding and allowing in water from the sea
2. when one plate sinks below another plate during a collision
3. a place where extremely hot material from inside the Earth erupts at the surface
4. the separating of continents by drifting across Earth's surface
5. the rapid movement of the ground usually in a wave motion
6. a huge wave in the ocean caused by an earthquake occurring on the seafloor
8. where plates are colliding with each other
11. the point on Earth's surface directly above the focus of an earthquake
17. a chain of islands formed at the edges of colliding tectonic plates