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29 Cards in this Set
- Front
- Back
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Wetland
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An area of land that is covered by a shallow layer of water during some or all of the year.
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Erosion
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The process by which water, wind, ice, or gravity moves fragments of rock and soil
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Divide
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A ridge of land that separates one watershed from another
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Brackish
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Water that is partly salty and partly fresh, characteristic of estuaries
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Non-point source
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A widely spread source of pollution such as road runoff, which is difficult to link to a specific origin
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Point source
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A specific source of pollution that can be identified
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Runoff
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Water that flows over the ground surface rather than soaking into the ground
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Eutrophication
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Water pollution caused by excessive plant nutrients.
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Topographic map
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A map that shows the shape and elevation of the land
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Contour interval
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The difference in elevation from one contour line to the next
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Contour line
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A line on a topographic map that connects points of equal elevation
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Chesapeake Bay
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The largest estuary in the United States
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Watershed
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An area of land that allows water to flow over or under it to a particular body of water
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Turbidity
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The total amount of sediment or foreign particles stirred up or suspended in water...a measure of how clean water is
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pH value
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How acidic or basic a substance is, measured on a scale of 1 very acidic to 14 very basic.
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Salinity
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The total amount of dissolved salt in a water sample
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Groundwater
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Water that fills the cracks and pores in underground soil and rock layers
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Water table
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The depth from the surface to the groundwater.
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evaporation
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The process by which liquid water changes to it's gaseous state of water vapor
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Precipitation
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Forms of water such as rain, snow, sleet, or hail that fall from clouds and reach earth's surface
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water cycle
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The coninuous process by which water moves from the earth's surface to the atmosphere and back, passing through living & non living parts of the environment
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water vapor
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The invisible gaseous form of water
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estuary
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A coastal inlet or bay where freshwater mixes with salty water
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tributary
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A stream or small river flowing into a larger river
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renewable resource
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A resource that is naturally replaced in a relatively short time
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Drought
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A water shortage caused by periods of low precipitation
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Macroinvertebrate
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Organisms without a backbone that are large enough to see with the naked eye.
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conservation
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The process of using a resource wisely so it will not be used up
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Concentration
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The amount of one substance in a certain volume of another substance
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