Earthquakes

the point beneath Earth's surface where rock under stress breaks to cause an earthquake

• epicenter

• focus

• fault

• seismic wave

Letter 'A' represents

• focus

• epicenter

• fault

• seismic wave

the point on the surface of the earth directly above the focus

• fault

• focus

• seismic wave

• epicenter

carry the energy of an earthquake away from the focus, through Earth's interior and across the surface.

• fault

• focus

• seismic wave

• epicenter

Type of earthquake wave that compresses and expands or pushes and pulls the ground like an accordion or slinky

• S wave

• P wave

• Surface wave

• Shear wave

Type of earthquake wave that vibrates from side to side and up and down.

• S wave

• P wave

• Surface wave

• Shear wave

Waves that move more slowly than body waves. Cause most damage.

• S wave

• P wave

• Surface wave

• Shear wave

move the most quickly and can go through anything (solid, liquid, gas). First seen waves on the seismograph.

• S wave

• P wave

• Surface wave

• Shear wave

Wave that arrives after primary waves and shake buildings from side to side. Check all that apply.

• S waves

• Secondary waves

• Shear waves

• Primary waves

a fracture, or break in the Earth's lithosphere or tectonic plate along which blocks of rock move past each other.

• Seismic wave

• fault

• primary wave

• secondary wave