Tectonic Plates

4. WAVES, Waves of energy through Earth's layers, the result of earthquakes.
6. DRIFT, A theory that explained how continents moved on Earth's surface.
8. An extremely hot, semi-molten liquid stored under the Earth's surface.
9. The end-result of the movement of tectonic plates.
11. When the Earth's crust is subjected to extreme pressure and begins to fold over itself.
13. WEGENER, A German who proposed the theory of tectonic plates.
16. The outer layer covered in overlapping tectonic plates.
17. Where an earthquake begins from.

1. BOUNDARY, When tectonic plates move away from each-other
2. What scientists use to detect and record earthquakes.
3. MANTLE, The liquid layer beneath the upper mantle.
4. The second wave of seismic waves, slower then P waves.
5. CORE, A liquid layer wrapping around the inner core.
7. BOUNDARY, When tectonic plates slide past each-other.
10. MANTLE, A very thick layer beginning under the Earth's crust.
12. BOUNDARY, When tectonic plates moving towards each-other.
14. Fractures in the Earth's crust from extreme forces caused by moving rocks in the asthenosphere.
15. Fastest and first seismic waves, also called primary waves.