Rivers and river valleys

What is the long profile of a river?

The long profile of a river Internet Geography
Forget the hint, go with your head!
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The long profile shows the gradient of a river as it journeys from source to mouth.

The long profile of a river is a way of displaying the channel slope (gradient) of a river along its entire length. True or False?

The upper course of a river with rapids as the river flows through steep V-shaped valleys. Internet Geography
It's one of two possible answers 😉
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The long profile of a river is a way of displaying the channel slope (gradient) of a river along its entire length.

A river tries to achieve a smooth curve to reach its base level at sea; this is called a cross section. True or False?

High Force waterfall on the River Tees Internet Geography
It's one of two possible answers 😉
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A river tries to achieve a smooth curve to reach its base level at sea; this is called a graded long profile.

Which section of the long profile is concave?

High Force waterfall on the River Tees Internet Geography
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The middle course of the long profile of a river is concave.

Where does the long profile start?

A confluence in a river Internet Geography
The photo above is not a clue!
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The long profile of a river starts at its source.

Which stage of the long profile is shown in the image above?

The upper course of a river with rapids as the river flows through steep V-shaped valleys. Internet Geography
Look at those interlocking spurs!
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Which stage of the long profile is being described below? Transportation mainly involves large boulders being moved by traction.

bedload Internet Geography
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Transportation in the upper stage main involves large boulders being moved by traction.

The velocity of water in a river is greater in the upper stage than the lower stage of the long profile of a river. True or false?

Rapids on the River Tees Internet Geography
Velocity is affected by the proportion of water in contact with the bed and the banks.
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The velocity of a river increases downstream because a lower proportion of water comes into contact with the bed and the banks reducing friction.

Which part of the long profile has the deepest channel?

River Cocker
It's not the middle course!
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The lower course of the river has the deepest channel. This is because the volume of water is the greatest.

At which stage of the river does lateral erosion take over from vertical erosion as the predominant type of erosion?

A meander in the middle course of the river Internet Geography
It's not in the upper course.
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Lateral erosion takes over from vertical erosion as the predominant type of erosion in the middle course.

The long profile of a river quiz
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