# 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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## Scales that Represent Earthquake Magnitude

Covers the scales scientists use to measure the size and intensity of earthquakes.
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• PLIX

## Scientific Notation: Richter Scale Exponents

Scales that Represent Earthquake Magnitude Interactive
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• Video

## Measuring Earthquakes

Explains how scientists measure the power of earthquakes by using the Richter Scale and the Moment Magnitude Scale.
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• Video

## How Do We Measure Earthquakes?

Learn how earthquakes are measured.
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• Lesson Plan

## A Whole Lot of Shakin' Goin' On! Lesson Plan

Students collect data to compare the 1906 and 1989 California earthquakes, and determine the factors that influence the amount of shaking that occurs in an area due to an earthquake.
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• Critical Thinking

## Scales that Represent Earthquake Magnitude Discussion Questions

A list of student-submitted discussion questions for Scales that Represent Earthquake Magnitude.
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• Real World Application

## Did You Feel It

Students will enter their own earthquake data on USGS site and look at the impact that citizen-driven data collection can have
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• Real World Application

## Loma Prieta 1989

Reviews what scientists have learned in the quarter century since the Loma Prieta earthquake of 1989.
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• Study Guide