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1.) Using the arrival time difference between the P-wave and S-wave on a seismog

ID: 295419 • Letter: 1

Question

1.) Using the arrival time difference between the P-wave and S-wave on a seismogram will supply:

the magnitude of the earthquake

the direction of the oncoming seismic wave

the intensity of the oncoming seismic wave

the distance to the focus

the distance to the epicenter

2.) The largest tsunami on record was caused from which of the following?

an earthquake at a divergent bounday

an earthquke at a transform boundary

a submarine earthquake

an earthquake that caused a landslide

3.) The newscaster says "The _________ of the earthquake was 6.2 miles, north-east of Ventura Beach, California. To what point does this statemen reference?

seismic site

focus

wave front

inertial point

epicenter

4.) S waves provided clear evidence that the interior of the Earth has layers with different physical properties. Why?

S-waves provide compositional informtation as well

S-waves travel through solids, liquids, and gases

S-waves are the only waves recorded on seismographs

S-waves only travel through solids

the magnitude of the earthquake

the direction of the oncoming seismic wave

Explanation / Answer

1. Distance to the epicenter

* The S-P time interval will be used to determine the distance the waves have traveled from the origin to that center. The radius of the circle (perimeter of a circle) is the epicentral distance.

4. S waves can only travel through solids.

* they are shear waves.

3. Epicenter

2. An earthquake that caused a landslide.