Tectonic plates

2. When two plates meet their edges.
6. A repetition of activity that can be used to theorize with.
9. When two plates collide into each other and one plate subducts the other. This usually forms a trench underwater.
11. Heat cycles in the air mantle and ocean. Controls plate tectonics movement.
14. A liquid layer of earth also with nickel and iron. Borders inner core and the mantle.
15. When the earth starts to shake violently due to plate tectonics reacting.
16. A mid ocean ridge over the edges of the Atlantic Ocean.
17. When magma or lava sprouts out from the mantle, or an eruption from volcanoes.
18. The man that theorized continental drift in 1912 because of the similar fossils, rocks, and that Africa and South America fit together like a puzzle piece!.
19. A hot dense ball in the middle of the earth with iron and nickel.

1. A large slab of rock composed of both the continental and the oceanic lithosphere.
3. Can be formed in convergent plates or divergent plates, but not transform. And it sprouts out lava.
4. Hard and dense Magyar underneath tectonic plates.
5. When two plates slide against each other.
7. When two plates go opposite each other and make a ridge. Forms a mid ocean ridge underwater.
8. The speed or time how fast something goes.
10. The hard solid rock underneath the land and water.
11. The theory made by Alfred Wegener that all the continents were once one, and then drifted millions of years after.
12. When one plate slips over another.
13. A hot spring that erupts jets of water and vapor into steam in the air.