Tectonics

1. ocean waves caused by under-sea earthquakes or volcanic eruptions.
3. rock, rock that is so hot that it has melted.
4. type of volcano formed at divergent plate margins.
6. the top of a volcano explodes off.
8. pushed apart.
10. waves (2 words) /Waves in the surface of the Earth caused by plate movement.
16. moves through the mantle due to ……………………… currents.
18. a volcano is not extinct but not erupting.
20. of the Earth's surface caused by motion of tectonic plates; diverging, converging or moving alongside
22. continental plate is largely ………………………………. the sea.
23. go to the bottom of a liquid.
26. two transform plate boundaries meet.
27. strength of an earthquake.
28. oceanic plate is for the most part ………………………the sea.
29. margins(2 words)/Where two tectonic plates meet.
30. Mountains caused by converging plates margins where the continental crust is crushed and folded.
31. centre of the Earth.

2. plates are……………………..than continental plates.
4. the heavier oceanic crust is pushed below the lighter continental crust.
5. word for margins.
7. surface of the Earth.
9. /Mountains which erupt occurring when plates converge or diverge.
11. rock which flows from erupting volcanoes.
12. plate(2 words)/What the crust is made of.
13. rock that oceanic plates are made of, which is heavier than granite.
14. layer around the core of molten magma.
15. together.
16. /A type of volcano occurring on convergent plate boundaries where there is subduction.
17. / ……………….. plate margins move alongside each other either in the same or opposite directions.
19. below the epicenter of an earthquake
21. name of a scale used to measure earthquakes.
24. grey powder created when something is burnt which spews out of volcanoes when they erupt.
25. rock that continental plates are made of.