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21 Cards in this Set

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  • Back
aftershock
one of many earthquakes that often occur during the days or months after a larger earthquake has occurred (noun)
crater
a hole at the top of a volcano (noun)
crust
the thin outer layer of the earth's surface (noun)
erupt
to eject gas, ash, and lava from a volcano (verb)
fault
a crack in the Earth's crust where movement occurs. (noun)
fissure
a long narrow opening or crack (noun)
geology
the study of rocks, soil and minerals (noun)
magnitude
greatness of size or intensity (noun)
pressure
physical force placed on an object (noun)
shake
to cause to move back and forth or up and down with short, quick movements (verb)
tsunami
a big wave caused by an earthquake, volcano, or some other movement of Earth's surface (noun)
convergent boundary
a part of the Earth's crust where two tectonic plates are moving toward each other (noun)
divergent boundary
a part of the Earth's crust where two tectonic plates are moving away from each other (noun)
eppicenter
the point on the Earth's surface directly above the hypocenter
igneous rock
rock formed by the hardening of hot, molten magma (noun)
lithosphere
Earth's crust and upper mantle; the rocky part of the planet (noun)
mantle
the semi-solid layer of Earth that lies between the outer crust and the core (noun)
plate tectonics
a geological theory explaining the movement of Earth's crust (noun)
ring of fire
a ring of volcanoes along the edges of the continents that border the Pacific Ocean (noun)
seismograph
an instrument that records the motions of the Earth, especially earthquakes (noun)
transform boundary
a part of the Earth's crust where two tectonic plates slide past each other (noun)