Earth's outermost layer
crust
a large, moving piece of the crust
(tectonic) plate
a crack in the crust
fault
a sudden movement in the crust
earthquake
a mountain that builds up around an opening in the crust
volcano
a place in the crust where magma rises almost to the surface
hot spot
the opening in the center of a volcano
vent
a cuplike shape that forms around the vent of a volcano, or where a meteorite has struck the Earth
crater
a giant wave caused by an earthquake
tsunami
large amount of water overflowing the sides of a river or drain
flood
water-soaked land that slides down a hil
mudslide
the quick downhill movement of loose rocks and soil
landslide
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