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100
The shaking that results from the movemetn of rock beneath Earth's surface.
What is an Earthquake?
100
A force that acts on rock to change its shape or volume.
What is stress?
100
Stress that pushes a mass of rock in opposite directions.
What is shearing?
100
Stress that stretches rock so that it becomes thinner in the middle.
What is tension?
100
Stress that squeezes rock until it folds or breaks
What is compression?
200
A change in the volume or shape of Earth's crust.
What is deformation?
200
A break or crack in Earth's lithospehre along which the rocks move.
What is a fault?
200
A type of fault where rocks on either side move past each other sideways with little up-or-down motion.
What is strick slip fault.
200
A type of fault where the hanging wall slides downward; caused by tension in the crust.
What is normal fault?
200
The block of rock that forms the upper half of a fault.
What is hanging wall?
300
The block of rock that forms the lower half of a fault.
What is footwall?
300
A type of fault wehre the hanging wall slides upward; caused by compression in the crust.
What is reverse fault?
300
A mountain that forms where a normal fault uplifts a block of rock.
What is fault-block mountain?
300
A bend in rock that forms where part of Earth's crust is compressed.
What is fold?
300
An upward fold in rock formed by compression of Earth's crust.
What is anticline?
400
A downward fold inrock formed by compression in Earth's crust.
What is syncline?
400
A landform that has a more or less level surface and is elevated high above sea level.
What is plateau?
400
The point beneath Earth's surface where rock breaks under stress and causes and earthquake.
What is focus?
400
The point on Earth's surface directly above an earthquake's focus.
What is epicenter?
400
A vibration that travels through Erath carrying the energy released during an earthquake.
What is seismic wave?
500
A type of seismic wave that compresses and expands the ground.
What is P wave?
500
A type of seismic wave that mvoes the ground up and down or side to side.
What is S wave?
500
A type of seismic wave taht forms when P waves and S waves reach Earth's surface.
What are surface waves?
500
A device that records gorudn movements caused by seismic waves as they move thorugh Earth.
What is seismograph?
500
The measurement of an earthquake's strength based on seismic waves and mvoement along faults.
What is magnitude?
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