Earthquake Foldable.

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Lesson 2 – Earthquakes and seismic waves

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Presentation transcript:

Earthquake Foldable

Earthquake = Vibrations and shaking caused by two tectonic plates sliding past each other. http://www.youtube.com/watch?v=4Y-62Ti5_6s

Reverse Fault Draw a picture of a reverse fault. Definition: A fault in which the rock above the fault plane (hanging wall) is displaced upward.

Normal Fault Draw a picture of a normal fault. Definition: A geological fault in which the hanging wall has moved down.

Strike-Slip Fault Draw a picture of a strike-slip fault. Definition: A fault in which surfaces on either side of the fault plane have moved horizontally and parallel to the fault line with little up or down movement.

Other Terms Epicenter: The point on Earth’s surface directly above the focus of an earthquake. Focus: The point of origin of an earthquake. Primary (P) Waves: a wave in which rock particles vibrate parallel to wave travel; can go through liquids and solids. Secondary (S) Waves: a wave in which rock particles vibrate at a right angle to wave travel; cannot go through liquids. Surface Waves: a wave that travels across the surface of earth (not in it); slower/larger amplitudes (loud), longer wavelengths.

Measurement Magnitude Intensity one per earthquake related to energy released Richter scale Intensity many for each earthquake measure of effects Mercalli scale