Geosystems- earthquakes (unit 4)

shaking of the earth's crust caused by a release of energy traveling as waves.

Match the following

• Fault

• point on the fault plane where first movement occurs

• all of the above

• point on the Earth’s surface directly above the focus

• Epicenter

• all of the above

how many seismic waves are there?

Match the following

• P-Waves – Primary waves

• - shear

  - slower

• S-Waves – Secondary waves

• - compression

  - fastest

• L-Waves – Love waves

• - surface waves (horizontal)

  - slower

• R-Waves – Rayleigh waves

• - surface waves (horizontal + vertical)

  - slowest

Seismic waves

Primary Waves (p waves)

The _________ of an Earthquake is the point where two plates meet and rock is placed under stress until it begins to break or move

• focus

• epicenter

• fault

• p wave

The Epicenter of an Earthquake is below the focus

• true

• false

the energy released by an earthquake move out from the Earthquake's _______ in the form of Seismic Waves

• focus

• epicenter

• fault

• p wave

True or False: Seismic Waves only travel in one direction

• true

• false