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science vocab. 2
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Term | Definition |
---|---|
Weathering | the process in which materials are broken down by the action of either mechanical, or physical process. |
Mechanical Weathering | the breaking down of a rock to smaller pieces |
Erosion | the process in which soil and sediment is moved to one place to another |
Chemical weathering | the processi which a rock is broken down into smaller pieces by chemical means |
Water cycle | the continuous movement of the earth's water: from the ocean to the atmosphere, to the land , back to the ocean |
Watershed | the area of land that is drained by the water system |
Deposition | the process in which material at the location where a river empties into a smaller body of water. |
Alluvial Fan | fan shaped pattern of deposited material at the location where a river empties into a flat plain( on happens on land usually in areas that are very dry in most of the year) |
Flood plain | the area along a river that forms from sediment deposited when a river overflows it's banks |
Water table | the upper surfaces of underground water |
pollution | the introduction of harmful substances into the environment |
point-source pollution | Pollution from one specific ste |
non-point source pollution | pollution that comes from many sources |
sewage treatment plant | facilities that clean the waste materials out of the water |