geography - rivers

Question 1

drainage basin

Answer 1

Watershed - the area of high land forming the edge of a river basin
Source - where a river begins
Mouth - where a river meets the sea
Confluence - the point at which two rivers meet
Tributary - a small river or stream that joins a larger river
Channel - this is where the river flows

Question 2

whats the long profile of a river

Answer 2

The long profile of a river is a way of displaying the channel slope (gradient) of a river along its entire length

Question 3

what are the erosion processes

Answer 3

hydraulic action, corrosion, solution and attrition

Question 4

what are the 4 transportation processes in rivers

Answer 4

traction, saltation, suspension and solution.

Question 5

what is deposition:

Answer 5

When the river loses energy, it drops any of the material it has been carrying.

Question 6

name 3 upper course landforms

Answer 6

v shaped valley

interlocking spurs

waterfalls / gorges

Question 7

name 2 middle course landforms

Answer 7

meanders

ox bow lakes

Question 8

how are meanders formed

Answer 8

The water erodes the outer bend and deposits sediment on subsequent side.

Question 9

lower couch landforms:

Answer 9

floodplains

levees

Question 10

whats a floodplain

Answer 10

an area known to flood next to a river

Question 11

whats a levee

Answer 11

an embankment to help prevent an overflow of water.

Question 12

where is river tees

Answer 12

North pennines

Question 13

name the human and physical causes of flooding

Answer 13

deforestation, farming, impermeable grounds

Question 14

what are flood hydrographs

Answer 14

Flood hydrographs show the relationship between rainfall and river discharge

Question 15

name the 2 flood management strategies

Answer 15

hard engineering eg. dams and embankments

soft engineering eg. flood plain zoning, planting trees

Question 16

en was the jubilee river flood

Answer 16

2014

Question 17

facts on mobile river:

Answer 17

ECONOMIC ISSUES
At £330 million, it is one of the UK’s most expensive flood defence schemes. It is one of four planned flood relief channels. However, the EA ran out of money to complete them all.

SOCIAL ISSUES
As the discharge of the River Thames between Maidenhead and Eton is reduced during high flow conditions, wealthy properties in Maidenhead and Eton are protected. However, this is at the expense of less affluent areas downstream at Wraysbury, beyond the confluence of the Jubilee River and the River Thames beyond Eton.