Hydrosphere OCEANS VOCABULARY

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Salinity

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The measure of all the salts dissolved in water.

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Brackish Water

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Water having more salinity than freshwater, but not as much as seawater. It results from mixing seawater and freshwater together.

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Temperature of Ocean Water

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Depth and location affect the temperature of ocean water.

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Pelagic Zone

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The open-ocean zone, which includes any ocean water outside of the shore.

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Brackish Water Ecosystem

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An ecosystem where salt and freshwater are mixed.

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Benthic Zone

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The ecological region at the lowest level of a body of water, including the sediment surface.

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Aphotic Zone

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The part of the ocean where there is little to no sunlight, preventing photosynthesis.

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Intertidal Zone

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The area of the shore that is exposed to the air at low tide and submerged at high tide.

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Ocean Currents

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Large-scale movements of water within the oceans, driven by factors like wind, temperature, and salinity.

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Thermocline

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A layer in a body of water where the temperature changes rapidly with depth.