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Ch.5 Earth Science B

Changing Landscapes

TermDefinition
volcanism movement of magma inside Earth
lava magma that reaches Earth's surface
vent volcano opening from which lava flows
volcano vent and the volcanic material around it
crater pit at the top of a volcanic cone
caldera large hole that forms when the roof of a magma dome collapses
shield cone volcanic cone made up of layers of hardened lava
cinder cone volcanic cone made up of rock particles, dust, and ash
composite cone volcanic cone made up of alternating layers of lava and rock particles
earthquake sudden, strong movement of Earth's crust
focus beneath Earth's surface where and earthquake starts
epicenter place on Earth's surface directly above the focus
seismic wave earthquake wave
seismograph instrument that detects and measures earthquakes
P-wave fastest earthquake wave
S-wave second earthquake wave to be recorded at a seismograph station
L-wave surface wave
Richter scale scale that measures the energy released by an earthquake
tsunami large ocean wave caused by an earthquake
Ring of Fire major earthquake and volcanic zone that almost forms a circle around the Pacific Ocean
Created by: cpasteris
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