Devin Middleton

2. current/a circulation pattern in which material is heated and rises in one area then cools and sinks in another area in a continuous loop
3. boundary/to tectonic plates push together
4. boundary/when two plates move past each other
6. hypothetical super continent that included all of the land masses on earth
7. layer in earths upper mantle and directly under the lithosphere
10. boundary/when two tectonic plates move apart
11. crust/the thick part of earths crust and forms large landmasses and older than the oceanic crust
14. plates/large moving pieces into which earths lithosphere is broken
15. plates/a slab of solid rock

1. layer of earth made up of the crust and the ridged rock
5. valley/a deep valley formed as tectonic plates move apart
8. process by which an oceanic tectonic plate sinks under another plate into earths mantle
9. long narrow ditch
12. Wegener/proposed a hypothesis known as continental drift
13. crust/the thin part of earths crust