Tectonic Plates

2. Peces of Earth's crust and uppermost mantle (lithosphere).
3. a Midocean ridge generalterm for an underwater mountain system that consist of various mountain ranges
4. Coming close together
5. theory explains the movement of the earths plates.
9. dramatic change in the form,apperance
10. Sideways or downward movement of the edge of a plate of the earth'scrust into the mantle beneath
11. Tending to be different or develop in different directions
12. the transfer of heat by the movement of large groups of particles from one place to another;warm areas lose heat & become cooler. cooler areas gain heat and become warm

1. A long high wave caused by an earthquake
2. parts of the Earth's crust slowly drift atop a liquid core.
5. A long narrow ditch.
6. A sudden & violent Shaking of the ground.
7. Two plates moving away from eachother & a new crustis from magma rises to Earth's Surface between two plates.
8. Formation of new areas of oceanic crust, which occurs through the upwelling at magma at midocean ridges.