Earthquake 1
Earthquakes 2
Earthquakes 3
Earthquakes 4
Earthquakes 5
100
Seismic waves that reach the surface and cause ground movement
surface waves
100
The type of fault that occurs due to shearing stress where rocks on either side of the fault surface move past each other.
strike-slip fault
100
The fastest type of seismic wave (arrives first).
primary wave
100
Tension
causes this type of fault.
normal fault
100
The type of wave that moves side to side, up and down
S-wave
200
When the force of rocks is great enough that they break and produce vibrations.
An earthquake
200
The fault that results when the hanging wall is pushed above the footwall.
a. normal fault
b. reverse fault
c. strike-slip fault
d. fault block mountains
b. reverse fault
200
What type of fault is shown here?
a reverse fault
200
The point below Earth's surface where energy is released (where there is a break or slip) during an earthquake .
the focus
200
Scale used to rate earthquakes by the total energy released:
a. Richter scale
b. Moment magnitude scale
c. Mercalli scale
d. tiltmeter
b. moment magnitude scale
300
The seismic waves that cause the most damage
a. p waves
b. s waves
c. surface waves
d. tidal waves
c. surface wave
300
Seismic waves that cause rock to stretch and compress
a. p waves
b. s waves
c. surface waves
d. tsunami
a. p wave -primary wave
300
An earthquake that occurs after a larger earthquake in the same area
aftershock
300
When earthquakes in the ocean displace large amounts of water, they can form these large waves
tsunamis
300
Using distance information from at least three seismic stations (triangulating) locates __________.
epicenter of the earthquake
400
The stress that squeezes rocks.
compression
400
A fold in the rock that bends upward into an arch, from compression forces
anticline
400
The rock that lies below the fault line.
the footwall
400
The stress force that causes rock to stretch outward
tension
400
The scale that measures the damage caused by an earthquake.
Mercalli
500
The stress force that is a result of two plates sliding past each other.
shearing
500
What happens to the amount of time between primary and secondary waves as they get farther from the epicenter.
the time becomes longer
500
The type of fault where the hanging wall slips below the footwall:
a. normal fault
b. strike-slip fault
c. reverse fault
d. It is not my fault
a. normal fault
500
The point on the Earth's surface directly above the earthquake focus.
epicenter
500
A fold in rock due to compression, that bends downward in the middle to form a bowl
syncline