Topic area 2: River definitions: processes Flashcards

1
Q

What is the upper course

A

The start of a river close to the source

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2
Q

What shape and texture are the rocks in the upper course

A

large and sharp

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3
Q

What is the middle course

A

This mixes features of the upper and lower course

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4
Q

What is the lower course

A

This is close to the mouth of the river, this is where the river is flattest and moves quickly carrying small pieces

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5
Q

What is the source

A

This is where the river begins

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6
Q

What is the mouth

A

Where the river meets the sea

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7
Q

What is a tributary

A

a small stream joining a big river

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8
Q

What are meanders

A

Bends in a river

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9
Q

What is a bedload

A

The material carried by the river

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10
Q

What is an oxbow lake

A

A small C shaped lake

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11
Q

What is a V shape valley

A

steep sides on the valley

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12
Q

What is a leeves

A

Small wall like feature that run along the river banks

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13
Q

What is a floodplain

A

A flat valley in the lower course of the river

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14
Q

Name the 3 River/sea processes

A
  1. Erosion
  2. Transportation
  3. Deposition
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15
Q

What is erosion

A

The water picking up and breaking down material from the river bed

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16
Q

What is transportation

A

The water carrying material it has picked up

17
Q

what is deposition

A

The water dropping material it cannot carry

18
Q

Name the 4 erosion processes

A
  1. Hydraulic action
  2. abrasion
  3. attrition
  4. solution
19
Q

What is hydraulic action

A

The force of the water smashes piece off the the river/cliff

20
Q

What is abrasion

A

Rock is carried by the water and thrown at the river/ cliff sides

21
Q

what is abrasion

A

Rock is carried by the water and thrown at the river/cliff sides

22
Q

What is attrition

A

Rocks are carried by the water and smash into each other making them smaller

23
Q

What is solution

A

Tiny pieces of sand/rock dissolved by the water and carried away

24
Q

Name the 4 transportation processes

A
  1. Traction
  2. Saltation
  3. Suspension
  4. Solution
25
What is traction
Large pieces of rock are rolled along the river bed
26
What is saltation
Smaller pieces of rock bounce along the floor
27
What is suspension
Small pieces are held by the water “floating” beneath the surface