Water & Ocean

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estuary

An area where the mouth of the river opens into the ocean.

marine

Of the sea, produced by the sea, found in the sea.

freshwater

Water with no salt content.

brackish water

Slightly salty water.

salinity

The measure of the amount of the salts dissolved in seawater.

surface water

Water found on the surface of the earth. Examples: ponds,lakes,etc.

subsurface topography

Formations underground or under water.

shelf

Ledge of land or rock under the sea.

trench

A long, narrow steep-sided depression in the seafloor forms when one plate sinks below another.

ridge

A long narrow chain of hills or mountains.

basin

Low area on the Earth that became an ocean when rainwater filled the area.

rift

An opening in the Earth.

sediment

Loose materials such as rock fragments that have been moved by wind, water, ice, or gravity.

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