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Which is not a major factor in the width of a continental shelf?
The number of rivers depositing new sediments
What is a characteristic of the water that is expelled from hyrdothermal vents?
The water is enriched with metals.
What type of bathymetric feature was heavily influenced by wave action at some point in its history?
Why is the sofar layer efficient for sound travel?
Refraction causes the sound energy to remain within the layer.
What explains why the ocean's sedimentary "memory" or record does not start with the ocean's formation?
Ocean sediment records are destroyed by subduction.
What is the calcium carbonate compensation depth?
The depth at which calcium carbonate starts to dissolve.
What was not a factor in making the mapping of the Earth's ocean more difficult?
The gravitational pull of underwater features
What is the source of most of the dissolved materials found in the ocean?
Dissolving and weathering of crustal rocks
What is a shadow zone?
A zone where the divergence of sound waves creates a region that has little sound energy penetration.
The sediments that occur on the slope, rise, and deep ocean floor and originate in the ocean are called:
Why is the amount of carbon dioxide dissolved in seawater much less than the theoretical maximum saturation level?
Carbon dioxide is quickly used by photosynthetic organisms.
What is the difference between adhesion and cohesion?
Adhesion is the tendency of water molecules to stick to solids while cohesion is the property that allows water molecules to stick to each other
What is true of heat capacity?
It is the measure of heat required to raise the temperature of one gram by 1° Celsius.
Why are some tropical waters unable to sustain life?
There is a low level of dissolved oxygen due to temperature.
Where does most of the material on the continental shelf come from?
Erosion from the adjacent continent
What was the primary way sediment was transported to North America (east coast) continental margin during the last ice age?
Rivers carry the sediment right to the shelf edge.
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