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Topic 12 Vocabulary #1
earths interior
14
Science
9th Grade
10/30/2011

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Term
lithosphere
Definition
the whole crust and the upper most portion of the mantle
Term
crust
Definition
the outermost portion of the earths solid lithosphere, seperated from the upper most mantle & the lower lithosphere by the moho interface
Term
original horizontality
Definition
a concept that states that sedimentary rocks and some extrusive igneous rocks, such as lava flows, form in horizontal layers parallel to earths surface
Term
folded
Definition
the bends in layered rock due to movement in the lithosphere: a type of deformed rock
Term
faulted
Definition
rock layers that are offset or displaced along a type of crack
Term
uplifted
Definition
raised up, as in a mountain building up
Term
earthquake
Definition
a natural, rapid shaking of the lithosphere caused when rocks are displaced due to the release of energy stored in rocks, most caused by the rapid movement along the faults, but also associated with other events, like the volcanic eruptions
Term
epicenter
Definition
the place on the earths surface lying directly above the focus, or the origin of the earthquake
Term
seismic waves
Definition
the energy waves given off by an earthquake; also called earthquake waves
Term
P waves
Definition
the waves in earthquakes that travel through earths interior and cause particles through which they travel to vibrate in the direction the waves are moving, the fastest of all the earthquake waves
Term
S waves
Definition
earthquake waves that move through the earths interior and cause particles through which they travel to vibrate @ right angles to the direction of the waves motion, will only travel through solids, also called secondary waves.
Term
tsunami
Definition
very fast and very large wavelength ocean wave or waves produced by impact events and disturbances of the ocean floor caused by earthquakes, volcanic eruptions or landslides; tsunamis can become very high and cause much wave damage near ocean shores
Term
volcano
Definition
a mount or mountain composed of extrustive igneous rocks
Term
volcano eruptions
Definition
the giving off of gases, lava and/or lava rock onto the earths surface or onto the atmosphere through the opening or vent of a volcano
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