Tectonic Plate Boundaries

2. Molten rock below Earth’s surface
5. The process by which new oceanic crust continuously forms along mid-ocean ridges and is destroyed at ocean trenches
6. Vast mountain range deep below the ocean’s surface
11. When continental and oceanic crust collide, causing the oceanic (denser) plate to sink beneath the continental (lighter) plate
12. A thin, solid rock layer of Earth, is broken into several large pieces
14. A boundary where two tectonic plates slide horizontally past each other
15. when magma erupts onto Earth’s surface
17. The rupture and sudden movement of rocks along a break or crack in Earth’s crust
18. A cycle where solid rock heats, cools, and sinks (happens in Earth’s mantle)
19. Layer of Earth made of liquid iron
20. Earth's continents once joined together into a supercontinent

1. A break in Earth’s crust where movement occurs
3. A boundary where two tectonic plates move apart from each other
4. Where the edge of two tectonic plates meet
7. The surface of Earth that is made of rigid, slabs of rock (plates), that move
8. A vent in Earth’s crust where molten rock flows
9. Thick, middle layer of Earth made of semi-molten rock
10. Deep, underwater troughs on the seafloor
13. A boundary where two tectonic plates move toward each other
16. Layer of Earth made of solid iron