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21 Cards in this Set
- Front
- Back
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divergent plate boundary
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hydrothermal vents & rift valley
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convergent plate boundary
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island arc & oceanic trench
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both convergent & divergent plate boundaries
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mountains & volcanoes
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ancient precursor of Pacific Ocean
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Panthalassa
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supercontinent 200 million years ago
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Pangea
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depression along ridge axis
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rift valley
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study of magnetism over geologic time
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paleomagnetism
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study of changes in character of oceans due to geographic changes
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paleonceanography
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Deep focus earthquakes are often associated with...
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deep-sea trenches
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At divergent plate boundaries, only _________ earthquakes can be found
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shallow
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Climate distribution is controlled by
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latitude
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Continental drift was confirmed by the study of
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pattern of alternating magnetic polarity of seafloor rocks
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Confirmation of seafloor spreading was confirmed by
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the age of the seafloor
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Seafloor magnetic pattern
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parallel to and symmetric about ocean ridges
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Differences in height between continental & oceanic crust
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isostasy
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The asthenosphere is composed of...
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outer mantle material
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The lithosphere is composed of...
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the crust and topmost portion of the outer mantle
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Deep ocean trenches
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convergent plate boundary & subduction zones
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Mid-Atlantic ridge is an example of...
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divergent boundary
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Oceanic-oceanic convergent plate boundaries?
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Volcanic island arcs
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Oceanic-continental convergent plate boundary?
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andesitic volcanoes
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