Waves
Terms
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- focus
- point inside the Earth where an earthquake begins
- Seismology
- the branch of geology that studies earthquakes
- seismogram
- a record of seismic waves recorded by a seismic graph
- seismograph
- an instrument that records seismic waves
- deformation
- a change in the shape of rock in response to stress
- S waves
- Secondary waves-don't travel as fast as P,but faster than L-moves through solids-arrives second
- P waves
- Primary waves-travel the fastest-back and forth motion-moves through solids,liquids,and gases-arrives first
- Fault
- a break or separation in rock, usually between two or more tectonic plates.
- epicenter
- the point on the Earth's surface directly above the focus of an earthquake
- Seismic waves
- waves of energy that travel through the Earth
- elastic rebound
- the sudden return of elastically deformed rock to its previous shape