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10 Cards in this Set
- Front
- Back
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What is a footwall? Where is it? What type of fault is it in?
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a block of rock that forms the lower half of the fault, the half of the fault that lies below/normal and reverse faults
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What is formed between 2 normal faults When they are uplifted?
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form fault block mountains.
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What happens when both sides of the fault have a lot of friction?
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when friction is high and the rocks do not move.
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What is a focus? What does it occur and what happens at the focus?
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the point beneath earths surface where rocks break under stress resulting in an earthquake. at the center of a seismic waves travel away from the focus.
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What is a P wave? When do they arrive compared to other waves?
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a type of seismic waves that compresses and expands the ground.the arrive first.
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What are S waves What does the S stand for?
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the type of seismic wave that moves the ground up and down side to side. secondary
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what kind of wave can travel through liquids and solids?
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p wave
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What is a seismograph?
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records the ground movement caused by seismic waves as they move through earth.
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What is a volcanic pipe?
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a long tube which magma moves from the magma chamber to earths surface.
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Why does magma flow upwards through rocks in rock?
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liquid magma is less dense than surrounding material, magma flows upward into any cracks in the rock above.
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