Plate Tectonics

2. This supercontinent, the Pangaea, existed before the _____.
3. This is mass divided by volume
5. The crust and uppermost mantle
8. When two plates slide past each other
11. The heat transfer by the movement of currents within a fluid
12. Found in the oceanic crust
13. The process that takes place at the convergent boundaries by which one plate moves under another plate and sinks into the mantle
15. Scientists say that the movement of this causes the Earth's magnetic field
16. All life exists on this layer on Earth
17. This layer's thickness is 2,867 km

1. Found in the continental crust
2. When two plates collide, one plate can slide under another into the subduction zone, or slide above another plate to form mountains
4. When two plates move away from each other
6. Scientific theory that describes the motion of the Lithosphere
7. The transfer of heat within a material between materials that are touching
9. A well-substantiated explanation of some aspects of the world
10. Under the Lithosphere
14. dense ball of solid metal