2007-02-10 01:29:50 · 10 answers · asked by Trisha T 1 in Science & Mathematics ➔ Earth Sciences & Geology
If the rocks are big enough, they can stop the flow entirely, as in a dam.
2007-02-10 01:59:00 · answer #1 · answered by Jerry P 6 · 0⤊ 1⤋
Yes, it does, a straight narrow un-blocked river will flow much faster than one with rocks, since the rocks act as brakes to the water, limiting the area of the stream (think of roadworks on a road) water piles up behind them and has to wait its turn to pass. slowing the flow
2007-02-10 10:19:05 · answer #2 · answered by prof. Jack 3 · 0⤊ 0⤋
If you are asking what happens to the average velocity, it will slow down, but the overall depth of flow will increase. Don't confuse the amount of water flowing (flow rate) with the velocity of the water (what flows in has to equal what flows out assuming you have a non changing steady flow rate).
Introducing rocks or surface irregularities in a channel will raise the height of the flow partly due to the irregularities cutting down on the overall cross sectional area of the channel and also due to turbulence (meaning water near the surface irregularities flowing in any direction other than directly downstream).
If you really want to understand it better (with engineering logic) go to the attached link, and also to the links found there on the continuity equation, and Manning's equation.
2007-02-10 12:22:11 · answer #3 · answered by woodleigh 2 · 0⤊ 1⤋
The same volume of water flows through a stream at any given location for a given period of time. When the water is deep it moves slower because there is more room for that water to move, as opposed to when it is shallow or rocky which constricts the water flow and forces it to flow through faster to move the same volume of water.
2007-02-11 12:23:51 · answer #4 · answered by Angry-T 5 · 0⤊ 0⤋
It will flow faster without rocks as the rocks create resistance and turbulent flow slowing the speed of the water.
2007-02-10 09:54:27 · answer #5 · answered by Anonymous · 0⤊ 1⤋
I would think that the biggest thing affecting stream flow speed is the angle that it flows downhill. A steeper downward slope would speed up the flow. Regardless of rocks or not.
2007-02-10 09:40:35 · answer #6 · answered by morris 5 · 0⤊ 1⤋
Without
2007-02-10 10:20:04 · answer #7 · answered by Studly Jim 3 · 0⤊ 1⤋
I would say with rocks b/c they build up power by blocking water in certain spots.....but that is just a guess.
2007-02-10 09:34:33 · answer #8 · answered by Jeannie H 2 · 0⤊ 1⤋
Hi Without due to reduced friction.
2007-02-10 09:31:58 · answer #9 · answered by Cirric 7 · 0⤊ 1⤋
I think it would depend on elevation, pressure or gravity assistance. We know that pipes are not flowing all that well if they do not have slope.
2007-02-10 09:34:23 · answer #10 · answered by Anonymous · 0⤊ 1⤋