physics wise( not gravity)
2007-06-25 14:56:49 · 7 answers · asked by piggy 1 in Science & Mathematics ➔ Physics
Gravity. That's really the answer.
2007-06-25 15:04:18 · answer #1 · answered by spookyjimjams 4 · 2⤊ 1⤋
"Physics wise" as they say at MIT and Princeton, it's gravity that makes a river flow downstream. Sorry
2007-06-25 22:06:39 · answer #2 · answered by Terry S 3 · 1⤊ 1⤋
It's the flow from a higher elevation to a lower elevation.
For the river (or any liquid), to flow there has to be a difference in pressure.
The difference in its height at point 'A', even though it may be very small, gives sufficient pressure difference to cause flow to the lower level of point 'B' downstream.
(Obviously, water can't flow uphill).
2007-06-25 22:52:02 · answer #3 · answered by Norrie 7 · 0⤊ 1⤋
Water molecules roll over each other unless the water is resting on a flat surface with restricting walls.
2007-06-29 12:02:21 · answer #4 · answered by johnandeileen2000 7 · 0⤊ 1⤋
Because the ground (bottom of the channel) is sloped, the gravitational force (how can you ignore it?) has a component down the slope which pulls the water along. (The other component is perpendicular and applies the force that erodes the stream bed.)
2007-06-25 22:04:55 · answer #5 · answered by Mike1942f 7 · 1⤊ 1⤋
Water flows downhill .....Whoa, that is gravity
2007-06-25 22:05:57 · answer #6 · answered by Anonymous · 2⤊ 1⤋
it is the river destiny, maked by GOD
2007-06-25 22:44:34 · answer #7 · answered by Arfianto M 2 · 0⤊ 1⤋