Plate Tectonics

3. magnetic striping when the seafloor is spreading and the oceanic crust is aging
5. plates that slide horizontally past each other
7. rocks that make up the oceanic crust
9. helped find enemy submarines
12. Primary waves
13. is a liquid because the seismic waves that make up earthquakes
14. a single super continent
17. Secondary waves are samples of rocks or volcanic rocks
18. moving plates over the mantle that are driven by deep heat and convection currents
20. plates that move toward each other

1. Any flat areas although many are dotted with volcanic mountains
2. The hot core warms up the base of the mantle which is called
4. what is the brittle crust and uppermost mantle called
6. rise up above the deep seafloor as a long chain of mountains
8. makes up the continental crust
10. who came up with the continental theory
11. when the plates move the continents and slowly drift apart
15. plates that move away from each other
16. a device that measures the magnetic field intensity
19. found at the edges of the continents or in the sea near chains of active volcanoes