click below
click below
Normal Size Small Size show me how
3.1 science vocab
Term | Definition |
---|---|
precipitation | Precipitation is rain, snow, sleet, or hail. Any kind of weather condition where something's falling from the sky.I t's also what happens in chemical reactions when a solid settles to the bottom of a solution. |
evaporation | process of a substance in a liquid state changing to a gaseous state due to an increase in temperature and/or pressure. |
condensation | the process by which atmospheric water vapor liquefies to form fog, clouds, or the like, or solidifies to form snow |
transporation | The movement of ions or molecules across a cell membrane in the direction opposite that of diffusion, that is, from an area of lower concentration to one of higher concentration. |
runoff | the draining away of water (or substances carried in it) from the surface of an area of land, a building or structure, etc. |
groundwater | Water that collects or flows beneath the Earth's surface, filling the porous spaces in soil, sediment, and rocks. Groundwater originates from rain and from melting snow and ice and is the source of water for aquifers, springs, and wells. |
source | the beginning or place of origin of a stream or river. |
mouth | an opening leading out of or into any cavity or hollow place or thing: the mouth of a cave; a bottle's mouth. the outfall at the lower end of a river or stream, where flowing water is discharged, as into a lake, sea, or ocean: the mouth of the Nile. |
velocity | a physical vector quantity; both magnitude and direction are needed to define it. |
bed load | particles in a flowing fluid (usually water) that are transported along the bed. Bed load is complementary to suspended load and wash load. Bed load moves by rolling, sliding, and/or saltating (hopping). |
tributaries | a stream that flows to a larger stream or other body of water. |
topography | the arrangement of the natural and artificial physical features of an area. |
gradient | The degree to which something inclines; a slope. A mountain road with a gradient of ten percent rises one foot for every ten feet of horizontal length. The rate at which a physical quantity, such as temperature or pressure changes over a distance. |