Earthquake Foldable Earthquake Vibrations and shaking caused by

Earthquake Foldable

Earthquake = Vibrations and shaking caused by two tectonic plates sliding past each other. http: //www. youtube. com/watch? v=4 Y-62 Ti 5_6 s

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