Rivers

Question 1

Whats a catchment area?

Answer 1

The area within the drainage basin

Question 2

What’s a watershed?

Answer 2

The boundary of the drainage basin (edge of highland)

Question 3

Name the four methods of transportation

Answer 3

Traction
Saltation
Suspension
Solution

Question 4

What’s a confluence?

Answer 4

The point at which two rivers or streams join

Question 5

What is traction?

Answer 5

Rolling stones along the river bed

Question 6

What’s saltation?

Answer 6

Sand sized particles bounce along the river bed

Question 7

What is suspension?

Answer 7

Silt and clay sized particles are carried within the water flow

Question 8

What is solution?

Answer 8

Minerals are dissolved in the water

Question 9

What is a drainage basin?

Answer 9

The area of land drained by a river

Question 10

How is a V-shaped valley formed?

Answer 10

Vertical erosion by river erodes the river bed
Leaves sides exposed, these are weathered and loose material falls down the slope and carried away by the river resulting in a V-shape

Question 11

How is a delta formed?

Answer 11

A river with lots of load hits the sea
And loses energy making it deposit it’s load, because the sea is sheltered and its currents aren’t strong enough to carry away the sediment it’s deposited in the mouth and forms islands of sediment the river is strained through

Question 12

How can you manage flooding?

Answer 12

Channel enlargement
Afforestation
Artificial stores (reservoirs)
Flood embankment (levees)
Flood relief channels