Water Quality Part 1

The water cycle is the
unending circulation of Earth’s water supply
Balance in the water cycle means that
the average annual precipitation over Earth equals the amount of water that evaporates
Plants release water into the atmosphere through a process called
transpiration
If you were to examine the profile of a typical stream you would probably find that the gradient is
steepest near the head
What is the ultimate base level of a stream ?
The elevation down to which a river has the ability to erode its bed everywhere along its course.
Which of the following does NOT erode a stream channel ?
A natural levee is ?
It is a ridges of sediment that accumulate along the margins of river channels on floodplains.
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One traditional flood control method has been to attempt to keep the stream’s flow within its channel by creating
artificial levee
What is a drainage basin ?
A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit of the basin, where the waters join another waterbody, such as a river, lake, reservoir, estuary, wetland, sea, or ocean.
Groundwater is found underground in the zone of ?
saturation zone
Permeable rock layers or sediments that transmit groundwater freely are called ?
aquifers
The percentage of the total volume of rock or sediment that consists of pore spaces ?