Earthquakes

Vibrations in the ground that result from movement along faults, or breaks in Earth’s lithosphere

• Focus

• Earthquake

• Transform

• Epicenter

Two blocks of rock slide horizontally past each other in opposite directions

• Normal Fault

• Strike-Slip Fault

• Reverse Fault

• Tension Fault

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

• Focus

• Seismic Waves

• Epicenter

• Surface Waves

Break in rock that earthquakes move on

• Tension

• Mountians

• Fault

• Strike-Slip

point on the surface directly above the focus

• P-Wave

• Seismic Waves

• Epicenter

• Surface Waves

•compression waves that travel through solids and liquids, compressing and expanding the material they pass through, temporarily changing volume

• P-Wave

• Seismic Waves

• S- Wave

• Surface Waves

Waves that carry energy of an earthquake away from the focus

• P-Wave

• Seismic Waves

• S- Wave

• Surface Waves

only travel through solids and temporarily change the shape, but not the volume of the material they pass through; move slower than P waves

• P-Wave

• Seismic Waves

• S- Wave

• Surface Waves

•move slower than P and S waves, but can produce severe ground movement with a wavelike motion

• P-Wave

• Seismic Waves

• S- Wave

• Surface Waves

devices that measure and record ground motion and helps determine the distance seismic waves travel

• Tape Measures

• Seismometers

• Seismograms

• Polygraphs