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100
The force that acts on rock to change its shape.
What is stress
100
Break in the crust where slabs of rock slip past each other
What is a fault
100
Type of stress that pushes masses of rock sideways in opposite directions
What is shearing
100
Three types of stress
What is tension, compression, shearing
100
Block of rock that forms the upper half of a fault
What is the hanging wall
200
When water is displaced by an undersea earthquake
What is a tsunami
200
An earthquake that occurs after a larger earthquake in the same area
What is an aftershock
200
The point beneath Earth's surface where the crust breaks and triggers an earthquake
What is the focus
200
When the hanging wall moves up past the footwall, what type of fault occurs
What is a reverse fault
200
Anticlines and synclines are two types of this
What are folds
300
Block of rock that forms the lower half of a fault
What is a footwall
300
Three types of seismic waves
What are P waves, S waves, and surface waves
300
Upward fold in rock
What is an anticline
300
Downward fold in rock
What is a syncline
300
What type of waves can move through liquids and solids
What are P waves
400
When an earthquake occurs and soil suddenly becomes liquid mud
What is liquefaction
400
When the hanging wall slips down past the footwall, this type of fault occurs
What is a normal fault
400
Type of stress that pulls on Earth's crust and stretches rock
What is tension
400
A large area of flat land that's elevated above sea-level
What is a plateau
400
When seismic waves reach the surface of the Earth, what type of wave do we observe
What are surface waves
500
Type of scale that estimates the total energy released by an earthquake
What is moment magnitude scale
500
Instrument used to measure and record ground movements during an earthquake
What is a seismograph
500
Type of stress associated with with strike slip faults
What is shearing
500
When geologists draw three circles to show distances from three seismograph stations, they are trying to determine this about an earthquake
What is the epicenter
500
The force that opposes the motion of one surface as it moves across another surface
What is friction