Freshwater Vocabulary Words    8.E.1.1, 1.3, 1.4

River Basin

The land that water flows across or under on its way to a river.


The streams and smaller rivers that feed into a main river

Ground Water

Water located below Earth’s surface


An area of land that drains into a stream, river, lake, or other body of water


Water that is not salty


A place where freshwater from a river meets and mixes with salt water from the ocean


The following of practices that protect Earth’s resources

Brackish water

Saltwater and freshwater mixed together, but not is salty as seawater. Like in estuaries.


The measurement of how acidic or basic a substance is, on a scale of 0 (very acidic) to 14 (very basic).


An organism used to monitor the health of an ecosystem.


organisms without backbones, which are visible to the eye without the aid of a microscope.

Dissolved oxygen

Microscopic bubbles of gaseous oxygen that are mixed in water and available to aquatic organisms for respiration.


The process by which the cells of plants and some other organisms use the energy of sunlight to make their own food.