point on the surface of the earth directly above the earthquake's focus
boundary between two sections of rock that can move relative to one another.
rock that behaves like something between a liquid and a solid
rock formed when heat, pressure, and chemical reactions cement sediments together.
earth's outermost layer of rock
small, solid fragments of rock and other materials. ex: sand, mud or gravel
rock that forms from molten rock (lava)
igneous or sedimentary rock that has been changed into new rock by pressure or temperature.
vibration of the earth from either volcanic activity or rock masses suddenly moving along a fault.
line seperating crust from mantle
line seperating mantle from core.
line seperating inner core from outer core.