Plates

1. a process that creates new oceanic crust and ocean floor
3. when plates slide past each other
5. the solid outer part of the earth that includes the crust and upper mantle
9. A hot liquid zone in the upper mantle directly underneath the mantle
11. molten rock in the earths crust
13. formed when very hot rock rises from the mantle and erupts through earths crust
16. the phenomenon associated with volcanic activity
19. a layer of the earths crust that lies under the seven continents
20. rock that’s in its molten form issues from volcanoes
21. when plates move toward each other.

2. the movement or study of the movement of earths crust
4. movement of the edge of one tectonic plate under another
6. a theory made by Alfred wegener
7. a trembling and shaking of the earth surface resulting from the sudden real ease of energy from the earth crust
8. a specialist in the history of the earth
10. an area where two or more tectonic plates meet
12. a raised area or mountain range under the ocean formed when magma fills the space between two tectonic plates
14. another name for a super continent.
15. one of the large landmasses of the earth
17. The thick shell of dense, rocky matter that surrounds the earth core
18. a huge ocean wave caused by a sudden powerful shift on the ocean floor like an underwater earthquake landslide or volcanic eruption