NAME:_______________________
DATE:__________________
EARTHQUAKES
EARTHQUAKE MEASUREMENT
EPICENTER- point on the Earth’s
___________ directly
___________ an earthquake’s
starting point
FOCUS- point _________ the
Earth where an earthquake
___________
SEISMIC WAVE
instrument that
records waves
SEISMOGRAPH
tracing of
earthquake
motion
SEISMOGRAM
energy that
RICHTER MAGNITUDE SCALE
travels through
STRENGTH AND INTENSITY
Earth
A measure of the strength of an
earthquake is called
_________________ .The Richter scale was created to find the ground
___________ for an earthquake and _________ by using __________
waves. The Mercalli intensity scale measures the amount of _________
caused by an Earthquake. The levels are from 1 to ____.
HOW EARTHQUAKES TRAVEL
P WAVESS WAVESSURFACE WAVES-
NAME:_______________________
DATE:__________________
EARTHQUAKES
EARTHQUAKE MEASUREMENT
EPICENTER- point on the Earth’s
surface directly above an
earthquake’s starting point
FOCUS- point inside the Earth
where an earthquake begins
SEISMIC WAVE
instrument that
records waves
SEISMOGRAPH
tracing of
earthquake
motion
SEISMOGRAM
energy that
RICHTER MAGNITUDE SCALE
travels through
STRENGTH AND INTENSITY
Earth
A measure of the strength of an
earthquake is called
magnitude .The Richter scale was created to find the ground motion
_________________
for an earthquake and strength by using seismic waves. The Mercalli
intensity scale measures the amount of intensity caused by an
Earthquake. The levels are from 1 to 12.
HOW EARTHQUAKES TRAVEL
P WAVESSURFACE WAVESS WAVESPressure/primary
Move along Earth’s
Shear/ secondary
surface
Travels through SLG
Travels through SG no
Travel more slowly
L
Fastest seismic waves
Second fastest seismic More destructive
Moves in side to side
waves
direction
Movement that we
feel
Moves up and down
direction