Stream velocity is the speed of the water in the stream. Units are distance per time (e.g., meters per second or feet per second). Stream velocity is greatest in midstream near the surface and is slowest along the stream bed and banks due to friction.
At which location is the water moving fastest?
Toward the middle of a river, water tends to flow fastest; toward the margins of the river it tends to flow slowest. 2. In a meandering river, water will tend to flow fastest along the outside bend of a meander, and slowest on the inside bend.
Where is the stream most likely flowing the fastest?
Water flow in a stream is primarily related to the stream’s gradient, but it is also controlled by the geometry of the stream channel. As shown in Figure 13.14, water flow velocity is decreased by friction along the stream bed, so it is slowest at the bottom and edges and fastest near the surface and in the middle.
How do you find the velocity of a stream?
Use the Stream Flow Field Sheet to calculate surface velocity. Divide distance (20 feet) by average velocity time to get average surface velocity in feet per second. Next, multiply this result by the velocity correction factor of 0.8 to get average corrected velocity.
In which location along a river is erosion most likely to be the greatest?
Generally, the steepness of a body affects the rate at which other materials would flow or move around. Thus, the steeper a river or stream, the greater would be its rate of erosion. Hence, the location along a river or stream at which the greatest rate of erosion would most likely occur is at its steepest incline.
Can you have erosion without deposition?
Thus without erosion deposition is not possible, in order to get deposited the physical erosion had to take an example of landslides that are from mass wasting the process of erosion causes the rocks to deforms from the hillsides and they crumble downhill to form a slope.
Which is the best example of erosion?
Some of the most famous examples of erosion include the Grand Canyon, which was worn away over the course of tens of millions of years by the Colorado River with the help of winds whipping through the formed canyon; the Rocky Mountains in Colorado have also been the subject of intense geological study, with some …
At which location would a glacier most likely form?
Most of the world’s glacial ice is found in Antarctica and Greenland, but glaciers are found on nearly every continent, even Africa.
Why did these caverns and sinkholes form?
Why did these caverns and sinkholes form? The bedrock chemically reacted with acidic groundwater. This type of bedrock contained large amounts of oxygen and silicon. Glacial deposits altered the shape of the bedrock.
Which rock weathers most rapidly when exposed to acid rain?
Ero/Dep review 1
| Question | Answer |
|---|---|
| Which rock weathers most rapidly when exposed to acid rain (calcite) | limestone |
| Which change in climate would most likely cause the greatest increase in chemical weathering of local bedrock? | more rain |
| Which factor has the most influence on the development of soil? | climate |
How do you calculate water velocity?
Figure 1. Flow rate is the volume of fluid per unit time flowing past a point through the area A. Here the shaded cylinder of fluid flows past point P in a uniform pipe in time t. The volume of the cylinder is Ad and the average velocity is ¯¯¯v=d/t v ¯ = d / t so that the flow rate is Q=Ad/t=A¯¯¯v Q = Ad / t = A v ¯ .
What factors control a stream’s velocity?
The velocity of a river is determined by many factors, including the shape of its channel, the gradient of the slope that the river moves along, the volume of water that the river carries and the amount of friction caused by rough edges within the riverbed.
How do you find the velocity of a river?
Stream velocity (V) is primarily a function of the stream area (A), morphology, and slope (S). The average stream velocity reflects the velocity which when multiplied by the cross-sectional area of the stream (area = width·depth: A = w·h) gives the stream discharge (Q). Table 1.
At which point is the water most likely to have the greatest velocity?
Stream Flow and Sediment Transport
Stream velocity is the speed of the water in the stream. Units are distance per time (e.g., meters per second or feet per second). Stream velocity is greatest in midstream near the surface and is slowest along the stream bed and banks due to friction.
What climatic conditions are most likely to produce wind erosion?
While wind erosion is most common in deserts and coastal sand dunes and beaches, certain land conditions will cause wind erosion in agricultural areas. So, it is wind that drives the erosion, but it’s mainly the landscape and condition of the land which leads to the most damaging wind erosion.
Which factor usually has the greatest effect on stream erosion?
Generally the more sediment that a stream carries, the greater the amount of erosion of the stream’s bed. The heavier, coarser‐grained sediment strikes the stream bed more frequently and with more force than the smaller particles, resulting in an increased rate of erosion.