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19 Cards in this Set
- Front
- Back
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Define a Convergent Plate Boundary
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When two plates collide into one another
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Define: Divergent Plate Boundary
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When 2 plates move away from one another.
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P-waves
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First to arrive
Fastest of waves Not as strong Goes through earth (rock) and liquid Push and Pull (compress and expand) |
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S-waves
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Side to side movement
More powerful (destructive) than p-waves Slower than p-waves Goes through earth (rock) not liquid |
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Surface Waves
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1
2 |
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Himalyan Mountains
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Convergent Plate boudary of continiental crust.
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How is the Japan Trench formed?
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Trench = convergent plate boundary of oceanic crust
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What is happening to the plates along the San Andreas Fault?
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Transform Plate.
Pacific plate is moving North North American Plate is moving South. |
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What happens to Wallce creek at the San Andreas Fault?
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The Wallace Creek is on the North American plate. The path is moving South.
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Why do earthquakes occur along the San Andreas Fault or any transform plate boundary?
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Because there has been movement of plates.
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Surface Waves
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Most dangerous waves
occur on surface - (do not move through through earth.) |
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What causes an earthquake?
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1. Earthquakes are caused by the sudden release of energy from tectonic plates moving.
2. Magma rising below volcano. |
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What is a fault?
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A fraction along a plate on the earth's crust where there has been movement.
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What is a trench?
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A convergent plate boaundary.
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What is a ridge?
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A divergent plate boudary
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List the layers of the earth:
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1. Crust - rock
2. Mantle - taffy-like rock 3. Outer Core - Liquid iron/ nickle 4. Inner Core - Solid Iron/ Metals |
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What is the Lithosphere
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Crust and upper mantle making up the tectonic plates.
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What is the asthensphere?
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The lower mantle which holds up the lithosphere.
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What is the evidence that the continents used to be together in Pangaea?
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1. Animal fossils on match on seperate continents
2. Plant fossil match 3. Glacier scratches in Tropical 4. Mountain ranges seem to line up on seperate continents 5. Continents look like they fit together like a puzzle. |
