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13 Cards in this Set
- Front
- Back
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Photic zone |
the layer of illuminated water at the surface -food production, warmth, visibility |
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What is the scientific method? |
an orderly approach to gathering and analyzing information |
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What is a hypothesis? |
a tenitive explanation for an observation -educated guess -prove or disprove the hypothesis
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What is a theory |
an explanation for an observation based on a large body of data -can change with new data
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What are the two main theories that contribute to oceanography? |
-theory of ocean creation -the theory of plate tectonics and continental drift
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a molten earth begins to cool and an ___________ and a _______ begin to form |
atmosphere and hydrosphere |
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what is volcanic outgassing? |
water (vapor) CO2, CO, SO2, methane and other gasses are emitted from volcanoes |
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What is convection? |
heated material rises because it is less dense and cooler material sinks |
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What helps drive plate motion? |
Convection |
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What are the two types of crust? |
Oceanic and continental |
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Oceanic crust is... |
heavy and thin |
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Continental crust is |
light and thick |
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What are the three ways plates move? |
convergent divergent and transform |
