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Rivers "carry" their sediment load only as long as the velocity of the water remains high enough to create sufficient turbulence to keep the particles "stirred up". Once a river loses its velocity and the stirring effect of the turbulence subsides the sediment load can no longer remain suspended in the water. At this point gravity takes over and the river begins to "drop" its sediments in a process named deposition.
Now a river going around a curve is like two tires at each end of an axle going around a curve. The tire on the outside of the curve has to move faster than the tire on the inside of the curve since it has a longer radius of travel. So too the water in the river moves faster at the outside of the curve than the water inside the curve. Between the two different water velocities the deposition is going to occur on the inside curve of the river where the water loses its velocity.
Conversely, the opposite of deposition which is erosion will take place at the outside of the curve in the river.
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When do streams erode sediment?
They erode sediments when it snakes back and forth across their valley. xxxJoanna
What are thick masses of ice that erode rock and move sediment called?
These are glaciers.
The lowest level to which a stream can erode its channel?
The base level
How does water erode rock on steep hills?
It erodes rocks on steep hills because the rain is slightly acidic so the acid (carbonic acid) and when the rain falls on those rocks it dissolves them slowing turning them into sediment! :) +++ Not quite. Carbonic acid only attacks calcium carbonate, magnesium carbonate and calcium sulphate (the essential minerals of limestone & chalk, dolomite and gypsum, respectively), although water will hydrolyse some other rock minerals very slowly. The dissolved minerals are carried away in solution, not as sediment; but the rocks' insoluble constituents do become sediment. An upland stream can erode rock rapidly thanks to its higher gradient hence speed, but against that the further uphill you find the stream, the smaller its volume.
How can you describe a process by which a stream can erode its streamed?
abrasion or the wearing away of rock by a grinding action.
How does a stream base level affect how it downcuts it channel?
Streams can't erode their channels endlessly. there is a lower limit to how deep can a stream erode. Base level is the lowest point to which a stream can erode its channels.
What is curve cause of stream channel cause by erosion?
Are you talking about meanders? when overtime laterally erode the banks (undermine) due to the hydrolic fore of the water. Then then turn to ox-bow lakes due to deposition along the curve and erosion coming into the curve. (bypasses the curve; cuts straight through)
Which part of a river experiences erosion?
The outer banks can erode, especially the outside edge of a curve in the river. The bottom can also be down cut.
What does the wind do to the sediment when it hits an obstacle?
probably erode it lol
What is the sediment when it hits an obstacle such as a boulder?
It starts to erode the boulder.
Would raising the base level cause a stream to gain energy or erode?
Erode
When do streams erode sediment?
They erode sediments when it snakes back and forth across their valley. xxxJoanna
How does a streams based level affect how it downcuts it's channel?
Streams can't erode their channels endlessly. there is a lower limit to how deep can a stream erode. Base level is the lowest point to which a stream can erode its channels.
What are thick masses of ice that erode rock and move sediment called?
These are glaciers.
What factors affect a river's ability to erode and carry sediment?
The factors that affect a river's ability to erode and carry sediment would be its size, how deep it is, and how fast it is going. If it is going downhill that can also affect it.
What are three ways that streams erode their channels?
Stream erode their channels by abrasion, grinding, and by dissolving soluble material.
How does gravity relate to a stream and ability to erode and deposit materials?
You
