​Part 1: Mercalli Scale

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Today, we will learn of one method used to measure earthquakes. An earthquake’s intensity is a measurement of ground shaking based on damage to structures and changes felt and observed by humans. It is expressed in Roman numerals on the Mercalli Scale

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​Objective: By the end of this lab I will be able to locate the epicenter of an earthquake based on observational data

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Here we have the Modified Mercalli Scale. It measures the shaking you feel during an earthquake. As you can see here, as the numbers get higher, the more you feel the shaking

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We will be using data from reports of an earthquake that struck California in 1989 and the Modified Mercalli Scale of Intensity to see where it might have originated from. ​

​Procedure - Part 1

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1. On the following slides, you will see reports that were called into a radio station after the quake​

2. For each slide, use the Modified Mercalli Scale ​on slide three to estimate the Mercalli rating at that Location

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​Part 2: The Richter Scale

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We will now explore the second and more reliable method used to measure earthquakes. This method requires you to know your distance from the quake and the amplitude of the waves

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​Objective: By the end of this lab I will be able find the richter scale measurment, wave amplitude, and distance to epicenter

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​Amplitude is how high or low the wave goes on the paper, as shown below

​Procedure - Part 2

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1. ​Answer the questions below for each earthquake.

2. First draw the line on the scale, the answer the question on the slide that follows​

​Part 3: Regents Connections

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