D Atkinson

4. A weak area in Earth's crust can form islands
9. Vibrations in the Earth's crust and mantle
11. The rise of warmer material and the fall of cooler material
12. The inner most layer of the Earth
13. When two tectonic plates move past each other horizontally
16. Magnetic sphere surrounding the Earth
17. The theory for which all contemporary understanding of tectonic plates is based
18. When tectonic plates push each other apart
19. Rocks formed from sediment

1. When continental crust and oceanic crust collide and the denser plate subducts
2. zone of charged particles
3. from the sun
5. To bend
6. When continental tectonic plates collide
7. The process of sorting different materials based upon density.
8. 1000 meters
9. A device that measures seismic activity
10. rock formed via volcanic activity
11. The outer most and thinnest layer of the Earth
14. Study of the Earth's crust
15. Rock formed by heat and pressure.
16. The thickest layer of the earth under the crust