GCSE Geography - Rivers and Coasts Flashcards

1
Q

What does Upland mean?

A

A hilly or mountainous area, often above sea level.

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2
Q

What does Lowland mean?

A

A rather flat area, but not always far above sea level.

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3
Q

What does Source mean?

A

The start/origin of water.

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4
Q

What does Tributary mean?

A

The smaller river that joins the bigger river.

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5
Q

What does Watershed mean?

A

The edge of the basin.

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6
Q

What does Confluence mean?

A

The point where a smaller river joins a bigger river.

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7
Q

What does Mouth/Delta mean?

A

The point where the river meets the sea.

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8
Q

What does Channel mean?

A

The part of the river that the water flows in.

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9
Q

What does Turbulence mean?

A

How calm or violent a river’s water is.

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10
Q

What does Valley mean?

A

The land on either side of the river.

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11
Q

What does Discharge mean?

A

How much water is in the river.

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12
Q

What does Helicoidal Flow mean?

A

When the current of a river pulls down under instead of forwards.

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13
Q

What does Vertical Erosion mean?

A

Downwards erosion instead of upwards.

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14
Q

What does Lateral Erosion mean?

A

Outwards erosion instead of downwards.

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15
Q

What does Cross Profile mean?

A

The side to side cross section of a river channel and/or valley.

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16
Q

What does Deposition mean?

A

When sediment carried by the river is dropped. This is because it no longer has enough energy to transport the sediment.

17
Q

What does Traction (Transportation) mean?

A

When large particles and sediment are rolled across the river bed.

18
Q

What does Solution (Transportation) mean?

A

When dissolved load gets carried through the water.

19
Q

What does Suspension (Transportation) mean?

A

This is when small sediment is held in the river.

20
Q

What does Saltation (Transportation) mean?

A

The bouncing of particles and sediment which are too heavy to be suspended.

21
Q

What does Hydraulic Action (Erosion) mean?

A

When the force of the water hits the river bed and banks. This is more common the higher the velocity.

22
Q

What does Abrasion (Erosion) mean?

A

When the load carried by the river repeatedly hits the bed or banks, dislodging particles into the flow of the river.

23
Q

What does Attrition (Erosion) mean?

A

When stones carried by the river knock against each other, gradually making the stones smaller and rounded.

24
Q

What does Solution (Erosion) mean?

A

When the river flows over limestone or chalk, the rock is slowly dissolved. This is because it’s soluble.