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Velocity increases in a downstream direction because more sources of water combine depth and width. A constant flow of water would result in a higher river velocity.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoThere are 3 reasons to a river going downstream. Those reasons are:
1. Gravity is forcing it downward.
2. The wind can be pushing waves in that direction.
3. The land area is folded downward, or it is on top of a hill, so it has to go downward.
Wiki User
∙ 13y agoDischarge increases as you move downstream because as more tributaries join the river further downstream. This means there is a greater volume of water in the river.
Wiki User
∙ 14y agoSimply because of gravity.
Anonymous
Why do rivers always flow down hill
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Why does the velocity of the river increases downstream?
It won't increase BECAUSE it goes downstream. Rather, the speed of the river depends on other factors, such as how narrow the riverbed is, or on the slope.
Does a stream's velocity increase or decrease downstream?
increase
Does the volume of water in a river increase further downstream?
yes
How does the gradient of a river affect its flow?
The gradient of a river is mostly flat or downhill which means that as the water flows it is affected by gravity. The steeper the gradient goes downhill, the more gravity will affect the water which will make the water flow faster (increases the velocity).
If a boat can go 20 miles per hours in still water and can go six miles downstream and 3 miles up stream in the same time how fast is the river?
assume river velocity = X mph boat velocity = 20 mph time to go 6 miles downstream = T1 time to go 3 miles upstream = T2 distance = time * velocity downstream: 6 mi = T1 * (boat velocity + river velocity) upstream: 3 mi = T2 * (boat velocity - river velocity) 6 = T1 * ( 20 + X ) 3 = T2 * ( 20 - X ) T1 * ( 20 + X ) = 2 * ( T2 * ( 20 - X ) ) since T1 = T2 then 20 + X = 40 - 2X 3X = 20 X = 6.67 thus, river velocity is 6.67mph
Why does the volume of the river increase downstream?
A river increases in volume as more streams join the main flow in the lower reaches.
Why does silt depth increase downstream?
Because as the river slows it deposits more than when it flows fast.
What is the greatest velocity that a boat on a river can attain if the boat's motor moves at 10 km per hr and the river's current is 8 km per hr?
Boat WRT land, downstream 10 + 8 = 18 KMH Boat WRT land, upstream 10 - 8 = 2 KMH Boat WRT water 10 KMH
Why does load vary downstream?
This is the amount of load a river can carry. Generally, the load quantity will increase with discharge and velocity because rivers of higher discharge and velocity have more energy so will be able to carry more load. Therefore, load quantity increases downstream. Also, small particles require less energy to be carried so as the load size decreases, quantity increases
Does gradient of a stream increase or decrease downstream?
Decrease. The source of the river is usually in a mountainous area with a steep gradient.
Why do rivers speed up even when the radiant decreases?
There is less friction from the bed and banks of the river downstream (where the gradiant decreases) so the velocity increases.
Does river load size decrease?
The size of the pebble will decrease down stream because the further downstream you go the quicker the river velocity. This means there will be more abrasion against the sides and bed of the river and the friction will be greater, this wears away the river load making it decrease in size. Increase velocity means that bigger material will be picked up by the river and carried as river load. More load in the river and increased size of load will mean more attrition and the river load will keep colliding into each other smoothening and rounding their shape. Brap brap !!
