Earthquakes

seismic wave that moves rock particles up-and-down in a backward rolling motion and side-to-side in a swaying motion

• primary wave
• surface wave
• secondary wave
• seismic wave

break in rock caused by shear forces, where rocks move past each other without much vertical movement

• strike-slip fault
• normal fault
• reverse fault
• fault

instrument used to register earthquake waves and record the time that each arrived

• epicenter
• magnitude
• liquefaction
• seismograph

seismic wave that moves rock particles at right angles to the direction of the wave

• primary wave
• secondary wave
• surface wave
• seismic wave

break in rock caused by compressive forces, where rock above the fault surface moves upward relative to the rock below the fault surface

• reverse fault
• normal fault 
• strike-slip fault
• fault

seismic wave that moves rock particles back-and-forth in the same direction that the wave travels

• seismic wave
• surface wave
• secondary wave
• primary wave

break in rock caused by tension forces, where rock above the fault surface moves down relative to the rock below the fault surface

• fault
• earthquake
• normal fault
• reverse fault

measure of the energy released during an earthquake

• earthquake
• magnitude
• surface wave 
• liquefaction

in an earthquake, the point below Earth's surface where energy is released in the form of seismic waves

• liquefaction
• fault
• epicenter
• focus

point on Earth's surface directly above an earthquake's focus

• earthquake
• epicenter
• fault
• focus

Tags

NGSS.MS-ESS3-2