Strike slip fault: A type of fault where rocks on either side move past each

other sideways with a little up or down motion at the same time.

Ring of fire: A major string of volcanoes that rims the Pacific Ocean.

Earthquake: The shaking that happens from the movement of rocks

beneath the Earth's surface.

Epicenter: The point on Earth's surface directly above an earthquake's

focus.

Density:The amount of mass in a given space; mass per unit volume.

Continental Drift:When the continents slowly move across the earths

surface.

Basalt: A dark, Dense igneous rock with a fine texture, found in the oceanic

crust.

Granite: Usually a light colored rock that is found in continental crust.

Peridotite: A Dense coarse-grained plutonic rock containing a large amount

of olivine believed to be the main constituent of the earth's mantle.

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