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Science
Erosion, Deposition, Weathering, Water Cycle
| Term | Definition |
|---|---|
| solar energy | energy source that powers water cycle....the sun |
| water cycle | process that recycles water |
| condensation | water vapor, lighter than air, forced upward, begins to cool until it reaches dew point where it forms clouds |
| dew point | temperature at which air becomes saturated |
| run off | water moving on surface of earth, down a slope, before it enters a channel, such as a creek or stream |
| aquifer | natural underground area, large quatities of ground water fill the space between rocks and sediment and accumulate |
| watershed | area of land where surface water drains down and flows to the same place. |
| permeability | measure of the ability of an earth material to let water pass through it |
| percolation | downward movement of water from the land surface into soil or porous rock caused mainly by gravity |
| evaporation | when the sun heats up a body of water and causes the water to turn to water vapor |
| precipitation | water condensed in the clouds falls to Earth in the form of rain, snow, sleet, and hail |
| groundwater | water that flows through pores in rocks and soil beneath the surface of the ground and may enter the water table |
| surface water | water that collects of the ground in puddles, ponds, lakes, streams, rivers, wetlands, or oceans |
| water table | the upper surface of underground water below the soil or rocks are permanently saturated with water and the pressure of water in the soil equals the pressure of the atmosphere |
| porosity | measure of the amount and size of spaces within an earth material (sand, soil, gravel, clay) |
| pollution | intoduction of a contaminant into the environment |