contemprary human and physical issues

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shallow focus
0-70km deep they cause the greatest damage and account for 75% of all earthquakes
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intermediate focus
70-300km deep
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deep focus
300-700km deep
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P waves
fastest, compressional they vibrate in the direction they are travelling
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s waves
50% less speed than p waves and shear rock by vibrating at right angles
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l waves
slowest, ground surface, rolling motion and vertical motion
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richter scale
logarithmic scale tat measures magnitude
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mercalli scale
measure intensity of the event and impact
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liquefaction
when violently shaken soils with a high water content lose their mechanical strength and start to behave like a fluid.
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Other cards in this set

Card 2

Front

70-300km deep

Back

intermediate focus

Card 3

Front

300-700km deep

Back

Preview of the back of card 3

Card 4

Front

fastest, compressional they vibrate in the direction they are travelling

Back

Preview of the back of card 4

Card 5

Front

50% less speed than p waves and shear rock by vibrating at right angles

Back

Preview of the back of card 5
View more cards

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