Questions:
1. What is the magnitude of earthquake in central Mindanao?
2. Where is the epicenter of the quake?
3. How is intensity of the quake determined?
4. Why is it important to know the magnitude and intensity of an earthquake?
5. Using the Venn Diagram below, differentiate magnitude and intensity of an earthquake
Intensity
Magnitude
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Answers & Comments
Answer:
1. Magnitude 6.0 earthquake
2. The location below the earth's surface where the earthquake starts is called the hypocenter, and the location directly above it on the surface of the earth is called the epicenter. Sometimes an earthquake has foreshocks.
3. Intensity is based on the observed effects of ground shaking on people, buildings, and natural features. It varies from place to place within the disturbed region depending on the location of the observer with respect to the earthquake epicenter.
4. Magnitude and Intensity measure different characteristics of earthquakes. Magnitude measures the energy released at the source of the earthquake. Intensity measures the strength of shaking produced by the earthquake at a certain location.
5. Intensity: The severity of earthquake shaking is assessed using a descriptive scale – the Modified Mercalli Intensity Scale.
Magnitude: Earthquake size is a quantitative measure of the size of the earthquake at its source.
Explanation:
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