earth science ch-8
Terms
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- p waves
- secondary seismic waves
- epicenter
- point on earths surface directly above am earthquakes starting point
- seismic gap
- area along a fault where few earthquake have happened recently but where strong earthquakes have happened before
- deformation
- change in shape of rock due to stress
- divergent boundary
- normal fault weak shallow
- body waves
- seismic waves that travel through the Earth's interior
- surface waves
- move the ground up and down in circles as the waves travel along the surface
- transform boundary
- strike slip fault moderate shallow
- seismograph
- intrument that records seismic waves
- focus
- point inside earth where an earthquake begins
- fault
- break along the earths crust
- convergent boundary
- reverse fault strong deep
- elastic rebound
- sudden reutrn of elastically deformed rock to its undeformed shape
- seismic waves
- waves of energy that travel through earth
- seismogram
- tracing of earthquake motion created by a seismograph
- seismology
- the study of earthquakes
- gap hypothesis
- theory that sections of active faults that have had few earthquakes are likely to be sites of strong earthquakes on the future
- p waves
- thes fastest seismic waves
- S P time method
- perhaps the simplest method seismologists use to find an earthquake's epicenter called ??
- ritcher scale
- is commonly used to measure earthquake strength