geography

HideShow resource information
what river landform is formed on a lower course
floodplains
1 of 39
what is a drainage basin
the area drained by a river and its tributaries
2 of 39
what is the mouth of the river
the end of the river where the river enters the sea
3 of 39
what is a water shed
the boundary between one drainage basin and another
4 of 39
what is a confluence
where two rivers meet
5 of 39
what is the source of the river
the start of the river
6 of 39
what is a tributary
small streams that joins the main river
7 of 39
what is corrosion (erosion)
acids in the water dissolves the riverbed and banks
8 of 39
what is hydraulic action (erosion)
waves hitting the cliff, force air int cracks which breaks up the rock
9 of 39
what is solution (transportation)
minerals dissolve in water
10 of 39
what is suspension (transportation)
finer material is light enough to float down the river
11 of 39
what is saltation (transportation)
smaller items of sediment bounce along the river bed
12 of 39
what is traction (transportation)
large item of sediment roll along the river bed
13 of 39
what river landforms are formed on upper course
waterfalls
14 of 39
what river landforms are formed on a middle course
meanders and oxbow lakes
15 of 39
what is deposition
dropping eroded material ( river slows down, loses energy, occurs on inside of a river bend or at the mouth)
16 of 39
what is corrasion/abrasion (erosion)
material being carried by the river rubs along the riverbed and banks
17 of 39
what is attrition (erosion)
rocks carried by the river collide and break into smaller pieces
18 of 39
what is physical weathering process
water frezzes in rock cracks and widens the cracks
19 of 39
what is chemical weathering process
(acid rain) rain water is lightly acidic, the acid reacts with minerals in the rocks and dissolves them
20 of 39
what is biological weathering process
acids released by begetation speed p chemical weathering, roots grow into cracks and split rocks apart
21 of 39
what is soil creep (mass movement)
soil particles move down the slope under influence of gravity
22 of 39
what is slumping (mass movement)
the river erodes the bottom of the valley slope making it steeper. material above slides downwards, particularly if it is saturated with rain water
23 of 39
what is rock fall (mass movement)
rocks at the top of the valley are affected by freeze thaw. parts of the rock breaks off and move down the slope
24 of 39
what is the width of the river
measuremnt from bank to bank
25 of 39
what is the depth of the river
distance form the surface to the bed
26 of 39
what is velocity
speed of the river water
27 of 39
what is discharge
volume of water that flows along in a given time
28 of 39
what is a gradient
steepness of the river bed
29 of 39
where do waterfalls form
where there is a layer of hard, resistant rock overlaying a softer, less resistant rock
30 of 39
what causes a plunge pool
hydraulic action and abrasion
31 of 39
what creates a slip-of-slope
greater deposition on inner bend
32 of 39
physical cause of flooding
rainfall intensity, geology,snow melt,drainage basin
33 of 39
human causes of flooding
deforestation, climate change, urbanisation
34 of 39
what is afforestation
planting tress within the drainage basin
35 of 39
what soft engineering are used for flood management
afforestation, land use zoning, washlands
36 of 39
what hard engineering are used for flood management
flood relief channels, channelisation, embankment
37 of 39
what is channelisation
deepening or widening of the river channel
38 of 39
what are embankments
levees built or near the river bed
39 of 39

Other cards in this set

Card 2

Front

what is a drainage basin

Back

the area drained by a river and its tributaries

Card 3

Front

what is the mouth of the river

Back

Preview of the front of card 3

Card 4

Front

what is a water shed

Back

Preview of the front of card 4

Card 5

Front

what is a confluence

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Geography resources:

See all Geography resources »See all Water and rivers resources »