18 terms

Earthquake!

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earthquake
The vibrations in the ground that result from movement along breaks in Earth's lithosphere.
fault
a break in the Lithosphere where plates move toward, away from, or past one another.
plate boundary
the place where 2 or more plates meet
seismic waves
vibrations that travel in and on the Earth
focus
the location inside the earth where an earthquake begins
epicenter
the location on Earth's surface directly above the focus
primary waves
fastest and first seismic waves
secondary waves
move up and down
surface waves
slowest and most destructive seismic waves
seismologist
scientist that studies earthquakes
mantle
layer below the crust
crust
outer layer of the earth
inner core
solid center of the earth
outer core
S-waves stop here
3
minimum number of seismograph stations needed to triangulate the epicenter of an earthquake
Modified Mercalli Scale
Ranks earthquakes based on destruction. Roman Numerals
Richter Scale
Describes the amount of seismic energy released during an earthquake.
Lithosphere
the earth's crust and upper mantle
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