Geologic Processes

3. a fracture or zone of fractures between two blocks of rock
6. created by the deposition of sediments in layers over long periods of time
7. created from the cooling and solidification of magma or lava
8. elevated region with a central valley on an ocean floor at the boundary between two diverging plates where new crust forms from upwelling magma
9. the point on the earths surface vertically above the focus of an earthquake
10. the process of wearing or being worn by long exposure to the atmosphere
13. the place inside the earths crust where an earthquake originates
15. hot liquid rock under earths surface
17. one of the large pieces of the surface of the earth that move separately
18. when two tectonic plates meet, one plate is pushed under the other into the Earth's mantle

1. created when existing rock is subjected to very high heat and pressure
2. the youngest rock is always found on top of the oldest rock
4. formation of new areas of oceanic crust, which occurs through the upwelling of magma at mid-ocean ridges and its subsequent outward movement on either side
5. long, narrow depressions on the sea floor that form at the boundary of tectonic plates where one plate is pushed beneath another
11. earthen materials are worn away and transported by natural forces such as wind or water
12. hot liquid rock above earth's surface
14. the fast seismic wave, material moves back and forth parallel to the direction the wave is moving
16. the slower seismic wave, the material moves up and down perpendicular to the direction the wave is moving