1.3 River channel processes and landforms Flashcards

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1
Q

What is meant by abrasion?

A

The wearing away of the bed and bank by the load carried by the river..

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2
Q

Abrasion

A

Wearing away of the bed and bank by the load carried by a river

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3
Q

Attrition

A

The wearing away of the load carried by a river

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4
Q

Hydraulic action

A
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5
Q

Corrosion/Solution

A

removal of chemical ions, especially calcium

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6
Q

Load

A

the heavier and sharper the load, the greater the potential for erosion

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7
Q

hydraulic action

A

this is the sheer power of the waves as they smash against the cliff. Air becomes trapped in the cracks in the rock and causes the rock to break apart

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8
Q

PH

A

rates of solution are increased when the water is more acidic

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9
Q

What is meant by attrition?

A

The wearing away of the load by a river.

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10
Q

What is meant by hydraulic action?

A

The force of air and water on the sides of the rivers and in cracks.

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11
Q

What is meant by corrosion or solution?

A

The removal of chemical ions - especially calcium

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12
Q

What is meant by suspended load?

A

It is how the smallest particles are carried in supension.

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13
Q

What is meant by salted load?

A

The transport of larger particles in a series of ‘hops’

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14
Q

What is meant by bed or tracted load?

A

How peebles are shunted along the bed.

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15
Q

What is meant by solution (transport) ?

A

How the material is carried in areas of calcareous rock.

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16
Q

What is meant by capacity?

A

The largest amount of debris that a stream can carry.

17
Q

What is meant by competence?

A

The diameter of the largest particle that can be carried.