Cade Harrison

3. land mass that used to be all the continents
5. movements of earths continents across the ocean floor
6. plates slide past each other
8. large depression in the ocean with very steep walls
9. plates move away from each other
10. line on a diagram or map connecting points to the same time or equal times
11. study of earths magnetic field in rocks
12. plates move toward each other
13. process that occurs at the mid ocean ridges where new crust is formed from volcanic activity
14. cold dense plates sinking into the mantle at trenches

1. sideways and downward movement of the edge of a plate
2. change in direction of the earths magnetic field
4. used to measure magnetic forces
6. the earth is divided into number of plates which float over the mantle independently
7. sliding plate force proposed mechanism for plate motion in plate tectonics