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fresh&ground water
| Question | Answer |
|---|---|
| balance in the water cycle means that | the average annual precipitation over earths equals the amount of water that evaporates |
| as stream discharge increase what occurs | stream velocity, channel width and depth increase |
| the water cycle is | unending cycle of earths freshwater supply |
| a drainage basin is | the land area that contributes water to a stream |
| the ability of a stream to erode and transport material depends largely on its | velocity |
| the most prominent features of a narrow v-shaped valley where the stream profile drops rapidly are | rapids and waterfalls |
| along strait stretches of a stream of a channel , the highest velocities of water are found in what part of the stream | near the surface in the center of the stream |
| the vertical drop of a stream channel over a certain distance is called | gradient |
| what are the boundaries called that separate streams in adjacent drainage basins | divides |
| in a typical stream where the gradient is adjacent drainage basins | is small |
| plants release water into the atmosphere through a process called | transpiration |
| which factors do not influence stream velocity | stream elevation |
| occasionally deposition causes the main channel of a stream to divide into several smaller channels called | distributaries |
| the capacity of a stream is directly related to its | discharge |
| in a stream channel which of the following will be deposited first | gravel sized particles |
| what is the measure if the largest particles a stream can carry | competence |
| what happens as a stream slows down | velocity and competence decrease and sediment begins to drop out |
| what order do sediments deposit in | gravel sand silt clay |
| what is alluvium | sorted material deposited by a stream |
| delta | accumulation of sediments may form from deposits |
| natural levees | form when streams outflow banks ---> sediments deposit |
| where is erosion more effective in a stream and why | most effective in downsides of meander ---> outside of a curve |
| narrow valley | v shaped rapids and waterfalls profile drops and rapidly downward reosion |
| wide valley | flat valley floor forms ---> flood planes meander oxbow lake sicle to side erosion |
| why are streams important | because they carry water to other places |
| watershed | land area in which surface runoff drains into rivers and streams |
| flood plane | broad flat area on each side of the river where extra water collects |
| how does groundwater form and why is important | soaks into the ground, provides drinking water for more than 1/2 the USA |
| describe the zone of saturation | where water fills all the pore spaces |
| what types of things can change the leave of the water table | rainfall/drought, well and water usage irrigation is the single greatest use of well water |
| what is an aquifer and why are they important | permeable rock or sediments that let water flow through them freely water may flow through them for several states |
| what is a spring and where do they come from | naturally form in places where water table intersects the surface usually in a hillside |
| what causes an artest well | aquifer |
| describe a hot spring | 6-9 degres warmer than the temp. of the air source of the heat is usually earths interior |
Created by:
SarahCaver
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