Question

Stream velocity varies within a stream, with the major variable of a straight flowing and uniform depth stream being: ?

1) the distance from the frictional contact points
2) the amount of water being introduced to the stream
3) the suspended load in the stream
4) the dissolved load in the stream

Answer 1

Stream velocity is mostly affected by the distance from the frictional contact points in a straight and uniformly deep stream. Friction with the stream bed and banks slows down the water, creating variable velocities within the stream.

Step-by-step explanation:

The major variable affecting velocity in a straight flowing stream with a uniform depth is the distance from the frictional contact points. The velocity of water in a stream will generally be higher in the center, where the distance from the frictional contact points such as the stream bed and banks is greater. As water flows closer to these areas, friction slows it down, resulting in variable velocities within the stream.

In a scenario where the stream is uniformly deep and straight, other factors like the volume of water introduced, or the load (suspended or dissolved), are less significant in influencing the velocity directly than the frictional contact, which is constantly encountered along the length of the stream.