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Scatter: earthquakes

theory of plate tectonics
idea that earth's crust is made up of moving plates
reverse fault
occurs where rocks push together until they force a section of rock upward
P-waves
travels in a a push and pull motion; fasting moving body wave
fault
break in the earth's surface along which rock can move
tsunami
giant ocean wave caused by earthquake, volcano or landslide near the ocean or under
Rayleigh waves
move along ground in a rolling motion, similiar to the way ocean waves roll
s-waves
moves in an up-and-down zigzag; slower than p waves
plate boundary
place where plates meet
Pangea
name for a single large land mass scientists used to believe in
land waves
love waves and Rayleigh waves
love waves
moves back and forth in a zigzag pattern; fasting moving land wave
seismologist
scientist who studies the movement of the earth
seismic wave
vibrations that flow from the focus of an earthquake
focus
beginning point of an earthquake; location from which energy waves are sent
strike-slip fault
occurs as rocks move horizontally past each other
normal fault
a section of rock may fall between separating rocks as the rocks move apart from each other
earthquake
an event that occurs when rocks along the plate boundaries shift suddenly and release their stored energy
4 layers of the earth
crust, inner core, outer core, mantle
lithosphere
crust and upper crust of the earth's mantle
plate
a large pice of the earth's crust that floats on the melted rock of the earth's mantle
seismogram
records of movements
magnitude
amount of energy released from an earthquake
Richter scale
measures the magnitude or strength of the seismic wave of an earthquake
epicenter
point of the surface of the earth directly above the focus of an earthquake
seismograph
a machine used to detect, time and measure the movement of the earth

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4 layers of the earthcrust, inner core, outer core, mantle
P-wavestravels in a a push and pull motion; fasting moving body wave
Pangeaname for a single large land mass scientists used to believe in
Rayleigh wavesmove along ground in a rolling motion, similiar to the way ocean waves roll
Richter scalemeasures the magnitude or strength of the seismic wave of an earthquake
earthquakean event that occurs when rocks along the plate boundaries shift suddenly and release their stored energy
epicenterpoint of the surface of the earth directly above the focus of an earthquake
faultbreak in the earth's surface along which rock can move
focusbeginning point of an earthquake; location from which energy waves are sent
land waveslove waves and Rayleigh waves
lithospherecrust and upper crust of the earth's mantle
love wavesmoves back and forth in a zigzag pattern; fasting moving land wave
magnitudeamount of energy released from an earthquake
normal faulta section of rock may fall between separating rocks as the rocks move apart from each other
platea large pice of the earth's crust that floats on the melted rock of the earth's mantle
plate boundaryplace where plates meet
reverse faultoccurs where rocks push together until they force a section of rock upward
s-wavesmoves in an up-and-down zigzag; slower than p waves
seismic wavevibrations that flow from the focus of an earthquake
seismogramrecords of movements
seismographa machine used to detect, time and measure the movement of the earth
seismologistscientist who studies the movement of the earth
strike-slip faultoccurs as rocks move horizontally past each other
theory of plate tectonicsidea that earth's crust is made up of moving plates
tsunamigiant ocean wave caused by earthquake, volcano or landslide near the ocean or under
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