Science words

3. The process by which new oceanic crust continuously forms along mid-ocean ridges and destroyed at ocean trenches
8. The rupture and sudden movement of rocks along a break or a crack in Earth's crust
9. when magma erupts onto Earth's surface
10. These impacts leave giant circular depressions in Earths' surface
12. A wave that forms when an ocean disturbance suddenly moves a large volume water
14. when two plates move apart from each other
17. The rapid downhill movement of soil loose rocks and boulders
19. Deep underwater troughs on the seafloor
20. A break in Earth's crust along which movement occurs

1. Any natural process that changes objects on Earth's surface over time
2. When two plates move towards each other
4. Molten rock below Earh's surface
5. When plates slide horizontally past each other
6. A semicircular hollow that formed by glacial erosion
7. An area of many fractured pieces of curst along a large fault
11. A supercontinent that later drifts apart
13. As the denser Nazca Plate collides with South America Plate it is forced under the South American Plate
15. A large mass of ice that forms on land and moves slowly across Earth's surface
16. A curved line of volcanoes that forms parallel to a plate boundary
18. A sharp ridge of rock formed between two glaciers