Plate tectonics

7. A fracture in earths crust
8. Places where plates slide sideways past each other
9. It occurs as tectonic plates are pushed together and the crust becomes shorter and thicker
13. When two plates come together
15. It can be emitted from the core mantle boundary region to reach the Earth's crust
16. When a plate moves slowly across a hot spot
17. The liquid shell made up of iron and nickel
18. Caused when underground rock suddenly breaks and there is rapid motion along a fault
19. Long, narrow depressions on the seafloor that form at the boundary of tectonic plates
20. Earth's outermost layer, or lithosphere made up of the crust and upper mantle

1. It is part of the upper mantle
2. Heat driven cycles that occur in the air, ocean, and mantle
3. It creates deep cracks in the crust of the Earth where the two plates split.
4. A layer of the interior of the Earth
5. The sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate
6. When two plates are moving away
10. Divergent, convergent, and transform
11. It is the solid, outer part of Earth, it includes the upper part of the mantle and the crust.
12. It is one produced by the movement of Earth's continental plates
14. The most dense shell of the earth