geography river landscapes

Question 1

abrasion

Answer 1

rocks carried along a river wear down the rivers bed and banks

Question 2

aerial photo

Answer 2

an image taken from above ground level looking down on a landscape, they can either be vertical looking directly down to the ground or oblique looking sideways

Question 3

alluvium

Answer 3

sediment deposited by a river when it floods

Question 4

attrition

Answer 4

rocks being carried by the river smash into each other and break up into smaller rounder smoother particles

Question 5

benefits

Answer 5

financial savings made by preventing flooding, along with any environmental improvements

Question 6

channel

Answer 6

the rivers main water coarse

Question 7

channel straightening

Answer 7

removing meanders from a river to make it straighter

Question 8

confluence

Answer 8

where a tributary joins a large river

Question 9

costs

Answer 9

the financial cost a scheme, and any negative impacts on the environment and on people live’s

Question 10

course

Answer 10

the path of the river channel or its valley

Question 11

cross profile

Answer 11

a cross-section of a river channel or its valley

Question 12

dam

Answer 12

a barrier built across a valley to interrupt the water flow in a river

Question 13

deposition

Answer 13

occurs when the material being transported by the sea is dropped due to the sea losing energy

Question 14

discharge

Answer 14

quantity of water that passes a given point on a stream or river bank within a given period of time

Question 15

drainage basin

Answer 15

an area of land drained by a river and its tributaries

Question 16

embankment

Answer 16

artificially raised river banks often using concrete walls

Question 17

estuary

Answer 17

estuary tidal mouth of a river where it meets the sea wide banks od deposited mud are exposed at low tide

Question 18

flash flood

Answer 18

a very sudden flood even resulting from a torrential downpour or rainstorm

Question 19

flood

Answer 19

where river discharge exceeds river channel capacity and water spills into the floodplain

Question 20

flood relief channel

Answer 20

artificial channels that are used when a river is close to the maximum discharge. They take the pressure off the main channels when floods are likely