Show:
Stress
Faults
Seismic Activity
Damage
Miscellaneous
100
This stress pulls on the crust, stretching the rock.
What is tension?
100
The hanging wall slips down relative to the footwall.
What is a normal fault?
100
The shaking that results from the sudden movement of rock along a fault.
What is an earthquake?
100
Occurs when an earthquake's violent shaking suddenly turns loose, soft soil into liquid mud.
What is liquefaction?
100
This device measures horizontal movement along a fault
What is a creep meter?
200
This stress squeezes the rock.
What is compression
200
The hanging wall moves up relative to the footwall.
What is a reverse fault?
200
The area beneath Earth's surface where rock that is under stress breaks, triggering an earthquake.
What is the focus?
200
An earthquake that occurs after a larger earthquake in the same area.
What is an aftershock?
200
Earthquake waves that vibrate from side to side and up and down only through solids.
What are S waves?
300
This stress pushes a mass of rock in two opposite directions.
What is shearing
300
Rocks on either side of the fault slip past each other.
What is a strike-slip fault?
300
The point on the surface directly above the focus.
What is the epicenter?
300
The large wave formed when water is displaced by an earthquake.
What is a Tsunami?
300
This causes rocks in the crust to be under stress
What are plate movements (plate tectonics)?
400
Arnold Achwarzenegger's biceps!
What is compression?
400
San Andreas fault is this type of fault.
What is a strike-slip fault?
400
Seismic waves that compress and expand the ground.
What are P (primary) waves?
400
Strong and flexible
What is earthquake-safe building construction?
400
Formed when land between two normal faults moves upward.
What is a fault-block mountain?
500
Rubbing your hands together.
What is shearing?
500
The names of the bottom and top rock in a normal fault and reverse fault.
What are the footwall and hanging wall?
500
Seismic waves that move the slowest.
What are Surface waves?
500
The four causes of earthquake damage.
What are shaking, liquefaction, aftershocks and tsunamis?
500
The device that records ground movements caused by seismic waves.
What is a seismograph?