Tectonics

2. The rock that oceanic plates are made of, which is heavier than granite.
3. Directly below the epicenter of an earthquake
8. Another word for margins.
11. Magma moves through the mantle due to ……………………… currents.
13. Movements of the Earth's surface caused by motion of tectonic plates; diverging, converging or moving alongside
15. Mountains caused by converging plates margins where the
16. The strength of an earthquake.
17. Being pushed apart.
18. When a volcano is not extinct but not erupting.
22. Where the heavier oceanic crust is pushed below the lighter continental crust.
23. The surface of the Earth.
24. margins Where two tectonic plates meet.
25. waves (2 words) Waves in the surface of the Earth caused by plate movement.
27. Soft, grey powder created when something is burnt which spews out of volcanoes when they erupt.
28. The oceanic plate is for the most part ………………………the sea.
31. A type of volcano occurring on convergent plate boundaries where there is subduction.
33. Molten rock, rock that is so hot that it has melted.

1. ……………….. plate margins move alongside each other either in the same or opposite directions.
4. When the top of a volcano explodes off.
5. A type of volcano formed at divergent plate margins.
6. The name of a scale used to measure earthquakes.
7. crust is crushed and folded.
9. plate What the crust is made of.
10. Pushed together.
12. Oceanic plates are……………………..than continental plates.
14. The continental plate is largely ………………………………. the sea.
15. Where two transform plate boundaries meet.
19. The layer around the core of molten magma.
20. Mountains which erupt occurring when plates converge or diverge.
21. The rock that continental plates are made of.
26. To go to the bottom of a liquid.
29. Molten rock which flows from erupting volcanoes.
30. The centre of the Earth.
32. Huge ocean waves caused by under-sea earthquakes or volcanic eruptions.