Plate Tectonics

3. A deep valley that forms at the edge of a continent when an oceanic plate sinks underneath a continental plate.
4. occurs where one plate slides under another as the two are pushed together.
7. occurs where two plates slide against each other. But rather than sliding smoothly, the plates build up tension, then release the tension with a spurt of movement.
8. The type of crust lying under the oceans of the world. It is only 4 to 6 miles (7 to 10 km) thick and usually younger than continental crust.
11. movement is felt as an earthquake.
12. grind past each other in a horizontal direction
14. A crack or fracture in
16. The name given to the supercontinent that existed more than 225 million years ago, in which the present-day continents were joined together in one large landmass.
17. apart, allowing magma, or molten rock, to rise from the Earth' s interior to fill in the gap. The two plates move away from each other like two conveyor belts moving in opposite directions.
18. crust where two tectonic
19. zone
21. The place where a collision between two continental plates crunches and folds the rocks at the boundary, lifting them up and leading to mountain formation

1. A raised area or mountain range under the oceans formed when magma fills the space between two tectonic plates that are spreading apart.
2. occurs where two plates
5. The border between two tectonic plates
6. layer of the earth's crust that lies under the seven continents. It is about 20 to 40
9. Zone, The place where one plate is getting bent and pulled under the edge of another plate.
10. A
13. The process that forms new ocean floor and oceanic crust. Magma oozes up from the mantle through a crack in the ocean floor, filling in the space between the plates and spreading out from the plate boundary.
15. two tectonic plates are pulling apart.
20. (35 to 70 km) thick and very old.
22. there is land at the edge of one of these plates,the ocean plate will subduct, or slide under that plate.