Earthquakes and Plate Tectonics

3. The fastest type of seismic wave that moves through solids and liquids, causing the ground to expand and contract.
6. The location underground where an earthquake begins.
9. A softer, semi-fluid layer of the mantle that the tectonic plates move on.
10. A tool used to measure the strength and duration of earthquakes.
12. The point on Earth's surface directly above where an earthquake starts.
14. Vibrations that travel through Earth and carry the energy released during an earthquake.

1. The rigid outer layer of Earth, made up of the crust and the upper part of the mantle.
2. A crack in Earth's crust along which movement occurs during an earthquake.
4. A slower seismic wave that moves only through solids and causes the ground to move side to side or up and down.
5. A large ocean wave caused by an underwater earthquake or volcanic eruption.
7. A smaller earthquake that happens after a larger earthquake in the same area.
8. The shaking of Earth's surface caused by sudden movement along a fault or by volcanic activity.
11. Plates Large sections of Earth's lithosphere that move and interact at different types of boundaries.
13. Scale A scale used to measure the magnitude (strength) of an earthquake.