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Unit 4 Water

Properties of Water and its Role in the Envirnoment

TermDefinition
Surface Tension the result of an inward pull among the molecules of a liquid that brings the molecules on the surface closer together; causes the surface to act as if it has a thin skin
Specific Heat the amount of heat required to raise the temperature of 1 kilogram of a material by 1 kelvin which is equivalent to 1 degree Celsius
Mechanical Weathering the type of weathering in which rock is physically broken into smaller pieces
Runoff water that flows over the ground surface rather than soaking into the ground
Tributary a stream or river that flows into a larger river
Delta a landform made of sediment that is deposited where a river flows into an ocean or lake
Groundwater water that fills the cracks and spaces in underground soil and rock layers
Continental Glacier a glacier that covers much of a continent or large island
Valley Glacier a long, narrow glacier that forms when snow and ice build up in a mountain valley
Till the sediments deposited directly by a glacier
Climate the average annual conditions of temperature, precipitation, winds, and clouds in an area
Reservoir a lake that stores water for human use
Permeable characteristic of a material that contains connected air spaces, or pores, that water can seep through
Water Table the top of the saturated zone, or depth to the groundwater under Earth's surface
Saturated Zone the area of permeable rock or soil in which cracks and pores are totally filled with water
Solvent the part of a solution that is usually present in the largest amount and dissolves a solute
Erosion the process by which water, ice, wind, or gravity moves weathered particles of rock and soil
Chemical Weathering the process that breaks down rock through chemical changes
Stream a channel through which water is continually flowing downhill
Flood Plain the flat, wide area of land along a river
Alluvial Fan a wide, sloping deposit of sediment formed where a stream leaves a mountain range
Glacier any large mass of ice that moves slowly over land
Ice Age time in Earth's history during which glaciers covered large parts of the surface
Plucking the process by which a glacier picks up rocks as it flows over the land
Longshore Drift the movement of water and sediment down a beach caused by waves coming in to shore at an angle
Habitat an environment that provides the things a specific organism needs to live, grow, and reproduce
Eutrophication the buildup over time of nutrients in freshwater lakes and ponds that leads to an increase in the growth of algae
Impermeable a characteristic of materials, such as clay and granite, through which water does not pass easily
Unsaturated Zone the layers of rocks and soil above the water table in which the pores contain air as well as water
Created by: Ms. Wright
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