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Seismic Wave

A seismic wave is an elastic wave generated by an impulse such as an earthquake or an explosion.

Hot spots

large rising or magma not at plate boundaries


point on earths surface directly above the focus.


bits of rock or solidified lava dropped from the air


Seismic sea wave


molten rock inside earth


is divided into about 13 major plates

Cinder Cone

small steep volcano with a cone made of tephra


long crack where plates diverge


vibrations that occur when rocks break due to stress

Pyroclastic flow

an avalanche of glowing rocks flowing on a cushion of hot gases


number based on seismic wave amplitude the measurement of the richter scale


instrument used to record earthquakes

Richter Scale

measures the magnitude of an earthquake.

Seismic safe

structures that can withstand earthquakes



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