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Earthquakes
n/a
30
Science
6th Grade
10/02/2009

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Cards

Term
Stress
Definition
A force that acts on rock to change its shape or volume.
Term
Friction
Definition
The force that opposes motion of one surface as it moves across another earthquake.
Term
Tsunami
Definition
A large wave produced by an earthquake on the ocean floor.
Term
Base-Isolated Building
Definition
A building mounted on bearings designed to absorb the energy of an earthquake.
Term
Moment-Magnitude Scale
Definition
A scale that rates earthquakes by estimating the total energy released by an earthquake.
Term
P Wave
Definition
A type of seismic wave that compresses and extends the ground.
Term
S Wave
Definition
A type of seismic wave that moves the ground up and down or side to side.
Term
Surface Waves
Definition
A type of seismic wave that forms when P waves and S waves reach Earth's surface.
Term
What seismic wave produces the most ground movement?
Definition
Surface Waves
Term
Mercalli Scale
Definition
A scale that rates earthquakes according to their intensity and how much damage they cause to a particular space.
Term
Richter Scale
Definition
A scale that rates earthquakes by the size of its seismic waves.
Term
Epicenter
Definition
The point on Earth's surface directly above an earthquakes focus.
Term
Hanging Wall
Definition
The the block of rock that forms the upper half of a fault.
Term
Footwall
Definition
The block of rock that forms the lower half of a fault.
Term
Anticline
Definition
An upward fold in rock formed by compression in Earth's crust.
Term
Syncline
Definition
A downward fold in rock formed by compression in Earth's crust.
Term
Tranform boundery
Definition
When 2 plates slide past eachother.
Term
Divergent Boundary
Definition
When 2 plates pull apart from each other.
Term
Convergent Boundary
Definition
When 2 plates collide together.
Term
Normal Fault
Definition
The hanging wall slips down relative to the footwall
Term
Strike-Slip Fault
Definition
Rocks on either sides of the fault slide past each other.
Term
Reverse Fault
Definition
The hanging wall moves up relative to the footwall.
Term
How many siesmograph stations need to be set up to be able to locate an earthquakes epicenter?
Definition
a minimum of 3
Term
What part of the seismograph shakes?
Definition
The rotating drum
Term
What is the name of the paper on a seismograph?
Definition
Seismogram
Term
Name the 4 devices that are used to monitor faults.
Definition
Laser-Ranging Device, GPS Satellites, Creep meters, and Tiltmeters
Term
Tiltmeter
Definition
Measures tilting or rising of the ground.
Term
Creep meter
Definition
Used to measure horizontal movement of the ground.
Term
GPS Satellite
Definition
Used to monitor changes in elevation along faults.
Term
Laser-Ranging Device
Definition
Shines a laser at reflecters set up along a fault to monitor horizontal movements.
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