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An ordinary river will fall steeply in its farthest headwaters, gradually decreasing in slope, till it reaches its mouth, where its bed will usually be almost flat. Thus there is little gravitational driving force to move the water.

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14y ago
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13y ago

Basically, at the source, the river has a high level of gravitational potential energy (GPE), which is then converted in to Kinetic energy to move. However, this means that it should be faster at the source. BUT sediment requires alot of energy to push along and so the river then uses up energy in carrying rather than flowing. Then erosion occurs, especially in the Mississippi, with the large meanders. SO overall, its the energy lost in erosion and sediment carrying and deposition.

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17y ago

Because it pours into an ocean or big water source.

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13y ago

Rivers tend to spread out into wide river deltas, as they reach the ocean, therefore the flow of water in a given cross sectional area will be less.

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Q: Why is a river wider at the mouth?
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What is a sentence for the word mouth of a river?

I have several sentences for you.The mouth of the river is wider than the rest of the river is.The water at the mouth of the river was filled with silt and sand.There were many sand bars at the mouth of the river.


What are the 5 hypothesis of a river?

a river gets wider from source to mouth a river gets deeper from source to mouth a rivers load gets smoother from source to mouth a rivers load gets smaller from source to mouth the velocity of a river stays the same from source to mouth


What the mouth of a river?

The mouth of a river is where the river flows into another body of water, such as an ocean, sea, lake, or another river. It is typically wider than the rest of the river and marks the end of the river's journey. At the mouth, the velocity of the river's flow decreases, leading to sediment deposition.


What is the definition for a mouth of a river?

Usually it would be an estuary.


What is flat land by river?

The floodplain is an area of flat land found on either side of a river that usually becomes wider as the river nears its mouth. A low watery formation of land at the mouth of a river is called a delta.


What is A flat land by a river?

The floodplain is an area of flat land found on either side of a river that usually becomes wider as the river nears its mouth. A low watery formation of land at the mouth of a river is called a delta.


Flat land at the mouth of a river?

The floodplain is an area of flat land found on either side of a river that usually becomes wider as the river nears its mouth. A low watery formation of land at the mouth of a river is called a delta.


What is the lower parts of rivers when they run into the sea called?

this part of a river is called the mouth of a river because it opens up into the sea and while it is doing that it is groing wider and wider and wider. sometimes it douesn't have to be running into the sea it could be a lake that then joins onto another river or another wide or large water area like that.


What is an example for a river mouth?

an example of a river mouth would be the mouth of the Mississippi river


When a stream becomes longer and wider is called what?

A stream that is longer and wider is usually considered a BROOK or a RIVER.


Is a lions mouth wider than a hippos mouth?

No, a hippos mouth is the largest in the animal kingdom.


Where is the mouth of the river?

The mouth of the river is at the end of the riveri