Earth Science

1. The section of the Earth under the Crust. Made mostly of molten lava.
5. One who studies Seismology.
7. The second deepest section of the Earth, it is in between the Mantle and the Inner Core. Made mostly of iron and nickel.
9. When two plates come together, this can form volcanos.
11. The section of the Earth which is inhabited. The Outer layer of the Earth.
13. The study of seismic waves and earthquakes.
15. The first waves to reach a seismic station. A type of Body Wave.
16. This is created due to the movement of tectonic plates.
17. The second type of Surface Wave, this wave moves the ground up and down.
19. A main type of Seismic Wave, that can penetrate the Earth.
20. One who studies geology.
21. The fastest type of Surface Waves, this wave move the ground side to side.

2. When two plates slide past each other, unlike the other two boundaries no magma is formed.
3. The record of rocks and fossils used to figure out the history of Earth.
4. When two tectonic plates move away from each other, lava helps the create a oceanic crust.
6. The second Body Wave, this wave can only solid rock and not through liquid.
8. A part of the Earth that moves in with each other.
10. The study of rocks and the earth.
12. A main type of Seismic Wave, this wave can not penetrate the Earth.
14. Waves of energy due to the movement of rocks in the Earth.
18. The deepest section of the Earth, the center of the Earth. Made mostly of iron.