McC 8 Geology
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| Force associated with a convergent boundary | compression
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| Force associated with a divergent boundary | tension
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| Force associated witha a transform boundary | shearing
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| Motion of plates at convergent boundary | together
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| Motion of plates at divergent boundary | apart
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| Motion of plates at transform boundary | slide past each other
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| Process that occurs at a convergent boundary | subduction
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| Process that occurs at a divergent boundary | sea floor spreading
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| Process that occurs at a transform boundary | fault
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| Structure created at ocean-ocean convergent boundary | island arcs & trenches
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| Structure created at ocean -continental convergent boundary | volcanic mountain
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| structure created at continental-continental convergent boundary | mountains
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| Structure created at ocean-ocean divergent boundary | mid ocean ridge
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| Structure created at continental-continental divergent boundary | rift valley
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| Structure created at a transform boundary | strike slip or lateral fault
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| Geographic example of ocean-ocean convergent boundary | Marianas Islands
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| Geographic example of ocean-continental convergent boundary | Andes Mountains
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| Geographic example of continental-continental convergent boundary | Himalayan Mountains
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| Geographic example of ocean to ocean divergent boundary | Mid Atlantic Ridge
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| Geographic example of continental-continenetal divergent boundary | East African Rift Valley
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| Geographic example of transform boundary | San Andreas Fault
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| Which boundaries are destructive? | convergent and transform
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| Which boundary is constructive? | divergent
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| Which boundary type creates new crust? | constructive
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| Which boundary type destroys old crust? | destructive
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| Cause of plate movement | convection currents
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| Whose idea was continental drift? | Alfred Wegener
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| Name the supercontinent | Pangaea
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| Describe the theory of continental drift | all continents were connected in one large mass & drifted apart
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| evidence that supports continental drift | similar rock structures on different continents, puzzle like fit of continents, fossils, climate clues
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| Describe seafloor spreading | Magma comes up through mid ocean ridges and flows sideways carrying ocean floor with it
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| Who's idea was sea floor spreading? | Harry Hess
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| Evidence that supports sea floor spreading | changing magnetic polarity, youngest ocean crust at mid ocean ridge
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| Describe the lithosphere | rigid layer of the crust & upper mantle
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| Describe the asthenosphere | plastic like layer of Earth on which lithospheric plates float & move
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| Describe shape & erruption type of shield volcano | broad shape with quiet, runny lava flows
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| Describe the shape & eruption type of a cinder cone volcano | small volcano formed by moderate to explosive eruptions of tephra
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| tension | stress that pulls apart
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| compression | stress that pushes together
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| shearing | stress that slides past each other
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| plant fossil that supports continental drift | Glossopteris
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| freshwater reptile fossil that supports continental drift | Mesosaurus
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| Continental drift occurs because of ... | sea floor spreading
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| Tsunami | giant ocean wave caused by earthquake motion on the ocean floor
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| subduction | one plate is forced underneath another plate: convergent
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| Composite Volcano | volcano that has alternating layers of tephra & lava; alternates between violent and quiet eruptions
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| Waves produced by Earthquakes | Seismic Waves
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