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19 Cards in this Set
- Front
- Back
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atmospheric pressure
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the force exerted by the outside air pressure
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barograph
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an instrument that keeps a continuous rocord of the changes in atmospheric pressure
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barometer
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an instrument that measures air pressure
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barycenter
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the common center of gravity round which the earth and moon rotate
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basalt
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a dark colored, smooth egneous rock; very abundant near the earth's surface and ocean floor
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batholith
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a huge mass of coarse-grained igneous rock that forms deep in the cores of mountain ranges
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bench mark
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a round metal plate that indicates the grounds elevation above sea level; indicated by BM
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black holes
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invisible objects in space; so dense that their gravitational forces do not let light escape
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carbon dating
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method of dating a substance based upon the rate of decay of radioactive carbon - 14 into nitrogen
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carbon dioxide
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plants take it in
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carbonic acid
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weak acid formed when carbon dioxide and water combine chemically
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cenozoic era
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age of the mammals
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chemical weathering
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changes in theory composition
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chromosphere
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photosphere
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cinder cone
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cone shaped
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cirque lake
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when the glacier that carved a cirque melts
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cirques
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bowl shaped depressions carved
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climate
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the average of general weather conditions
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coal
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rock formed from the remains..carbon
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