Plate Tectonics

1. pieces of Earth's crust
4. a theory explaining the structure of the earth's crust and many associated phenomena as resulting from the interaction of rigid lithospheric plates which move slowly over the underlying mantle.
6. a depression in the ground
7. two plates moving together
10. below the lithosphere
13. rigid upper part of Earth,upper mantle and the crust
15. two plates sliding against each other
16. destroy's landforms etc

2. raises up the surface of Earth creating new landforms
3. is the transfer of heat due to the bulk movement of molecules within fluids, including molten rock.
5. drift theory that the Earth continents have moved over time
8. two plate moving apart
9. super continent that existed some time ago
11. ring of volcanoe's in the pacific ovean
12. the liquid outer core and the solid inner core
14. movement when oceanic crust goes underneath another plate