Earthquake Scavenger Hunt edit 2017 Fleck.doc

Earthquake Scavenger Hunt edit 2017 Fleck.doc - Earthquake...

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Earthquake Scavenger Hunt Chapter 19 Name:Brendan _____________________ Go to the USGS Earthquake Hazards home page at Click on the LEARN tab. To find the following topics. Earthquake glossary 1. Please define the following words using the USGS earthquake glossary. Earthquake- Earthquake is a term used to describe both sudden slip on a fault, and the resulting ground shaking and radiated seismic energy caused by the slip, or by volcanic or magmatic activity, or other sudden stress changes in the earth. Focus- The hypocenter is the point within the earth where an earthquake rupture starts. The epicenter is the point directly above it at the surface of the Earth. Epicenter- The epicenter is the point on the earth's surface vertically above the hypocenter (or focus), point in the crust where a seismic rupture begins. Body wave- A body wave is a seismic wave that moves through the interior of the earth, as opposed to surface waves that travel near the earth's surface. P and S waves are body waves. Each type of wave shakes the ground in different ways. Surface wave- A surface wave is a seismic wave that is trapped near the surface of the earth. P wave- A P wave, or compressional wave, is a seismic body wave that shakes the ground back and forth in the same direction and the opposite direction as the direction the wave is moving. S wave- An S wave, or shear wave, is a seismic body wave that shakes the ground back and forth perpendicular to the direction the wave is moving.
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