Answer this using the PHIVOLCS Earthquake Intensity Scale (PEIS) *

13.  The strength of the shaking from an earthquake is called ___________.*1 pointtremorsintensitymagnitudeseismic waves

5.  Which scale measures the magnitude, or size, of an earthquake?*1 pointFujita ScaleSeismoscaleMercalli ScaleRichter Scale

Which of the following factors affect the intensity of ground shaking?*1 pointthe angle between the fault and the maximum principal stress directionthe distance from the epicenterthe local geological conditionsthe magnitude of the earthquake

6. Scale that is based on observable earthquake damage.*1 pointFujita ScaleSeismoscaleMercalli ScaleRichter Scale

21. How does the Richter Magnitude Scale calculate its measurements?*1 pointEyewitnessesAmount of damage causedThe amount of time the earthquake lastedThe strength of the seismic waves recorded by a seismograph machine