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13 Cards in this Set
- Front
- Back
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Recording of the three types of earthquakeswaves
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Seismogram
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The type of earthquake wave that shakes particles at right angles to their direction of travel
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S waves
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Is this true or false? On a seismogram, the greater the interval is between the arrival of the first P wave and the first S wave, the greater the distance to the earthquake source.
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true
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Is this true or false? You can use travel-time graphs from two seismographs to find the exact location of an earthquake epicenter
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false
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Most major earthquakes occur around the outer edge of what ocean
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Pacific
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The active earthquake areas i nteh circum-Pacific belt are
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Japan, the philippines, Chile, and Alaska's Aleutian islands
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What two types of measrements do scientists use to descrive the size of earthquakes
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intensity and magnitude
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Derived from the amount of displacement that occurs along a fault zone
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moment magnitude scale
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based on the amplitude of the largest seismic wave recorded on a seismogram
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Richter scale
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measure of the size of seimic waves or amount of energy released at the earthquake source
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magnitude
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measure of the amount of earthquake shaking at a location based on damage
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intensity
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What is the most widely used measurement for earthquakes?
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Moment magnitude
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Why is moment magnitude that most widely used measurement for earthquakes
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it is the only magnitude scale that estimates the energy released by earthquakes.
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