Plate Tectonics

4. A scientist who studies earthquakes
5. A seismic wave that can travel through the interior of the earth
6. An instrument that records the motions of the Earth especially earthquakes
8. An earthquake that comes after a larger one
9. Magma that flows out onto Earths surface from a volcano
10. move more slowly than P waves but in an earthquake they are usually bigger
13. A shaking or movement of Earths surface
16. A super continent existing 200 million years ago
17. The theory of pangea and the landmass coming apart
18. The innermost densest layer of Earth

1. The fastest body waves that arive befor S waves
2. The ability to cause change
3. A point within earth that originates the first movement of an earthquake
4. A site at which one or more seismographs are set up and routinely monitored
7. The layer of the Earth between the crust and the core
9. The process in which a solid takes on the characteristics of a thick heavy liquid
11. The ability to cause change
12. The transfer of heat energy through liquids and gases, fluids, by moving particals
14. the point on the Earths surface that is the center of the earth quake
15. A break in rock along where slabs are moved
17. Earths outer layer