Earthquakes

1. a wave that causes particles of rock to move in a back-and-forth direction parallel to the direction in which the wave is traveling
3. wave of energy that travels through Earth and away from an earthquake in all directions
5. a wave propagated along the surface of a liquid or a solid, typically on the sea or along the earth's surface (as a seismic wave)
7. behavior of a wave that involves turning back from a collision with a difference in material
8. a tracing of earthquake motion that is recorded by a seismograph
10. behavior of a wave that involves bending due to passing through a difference in material
13. a numerical scale measuring an earthquake's size and energy release

2. the point on Earth’s surface directly above an earthquake’s starting point
4. area on the surface of Earth where seismographs will not detect earthquakes / waves
6. a fracture or zone in the Earth's crust where rocks on either side move past each other
8. a wave that causes particles of rock to move in a side-to-side direction perpendicular to the direction in which the wave is traveling
9. the scientific study and recording of ground vibrations from earthquakes, volcanic eruptions, and explosions using instruments called seismographs
11. the location within the Earth at which an earthquake begins
12. material through which energy may travel