Plate Tectonics

3. a boundary where the ground is being smashed together
4. idea that the earths crust is split into multiple plates
7. the idea of the magnetism in rocks that were induced by the earth's magnetic field at the time of their formation
10. a place where the ground is being pulled apart
11. idea that the earths crust spreading apart and sinking under continetal crust while creating new crust

1. idea that the continents move and shift over geographic time
2. where the denser plate goes under the less dense plate
4. when all the continents were together
5. places where plates slide against each other
6. ridges in the middile of oceans on plate boundries where the crust is pulled apart and forming new crust
8. A deep gash where one plate went under the other less dense plate
9. areas in the middle of tectonic plate where the crust is over magma that is hotter than the magma around it causeing to melt away the crust
12. a area on land where to plates are divirging pulling the plates with it