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Scales that Represent Earthquake Magnitude

Scientists use different scales to indicate the intensity and magnitude of an earthquake including the Mercalli, Richter and moment magnitude.

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Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

Scales that Represent Earthquake Magnitude

by CK-12 //basic
Covers the scales scientists use to measure the size and intensity of earthquakes.
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10
• Video

What Does "Magnitude" Mean?

by CK-12 //basic
We’ve all heard earthquakes described in terms of their magnitude number. But what does this scale really mean? This video illustrates the variation of energy released in easy-to-understand terms.
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Scales that Represent Earthquake Magnitude Quiz - MS ES

by CK-12 //basic
Reviews the scales scientists use to measure the size and intensity of earthquakes.
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• Real World Application

The Magnitude of Magnitude

by CK-12 //basic
Earthquake magnitude is measured on a logarithmic scale so each whole number releases 33 times more energy than the number below it.
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• Real World Application

Shake Maps

by CK-12 //basic
Earthquake intensity maps are made to indicate where the shaking occurred. Maps from quakes before widespread seismograph networks use creative information.
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