Rivers

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describe the hydrological cycle
1) water evaporates 2) water vapour is moved inland by winds 3) water vapour condenses forming clouds and precipitation 4) transfers 5)stores 6)ends up in the sea again
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name the parts of the drainage baisin
watershed, tributary, source, confluence and mouth
2 of 14
name the types of weathering
mechanical, chemical and biological
3 of 14
describe the courses of a river
upper (v-shaped, steep and shallow), middle (gently sloping, wider and deeper) and lower (very wide, almost flat and very deep)
4 of 14
name the processes of erosion
hydraulic action, corrosion, attrition and corrasion
5 of 14
how is material transported?
traction, saltration, suspension and solution
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name the erosional landforms
waterfalls, meanders and ox-bow lakes
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name the depositional landforms
meanders, flood plains and deltas
8 of 14
describe the different parts of a storm hydrograph
peak discharge (highest discharge), lag time (delay between peak rainfall and peakdischarge), rising limb (increase in discharge) and falling limb (decrease in discharge)
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what factors effect hydrographs?
increase discharge - steeper (high rainfall, impermeable rock, salurated land, steep slopes and less vegetation) decrease discharge - gentler (low rainfall, permeable rock, unsaturated ground, gentle slopes and more vegetation)
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how do urban and rural areas affect hydrographs?
urban - drainages systems and lots of impermeable materials = increased discharge rural - more vegetation and reservoirs = decrease discharge
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what are the causes of flooding?
prolonged rainfall, heavy rainfall, snowmelt, relief (how the land changes) and geology
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what do humans do to cause flooding?
deforestation and urbanisation
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name the impacts of flooding?
deaths, buildings damaged, jobs lost, water supplies contaminated and crops lost
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Other cards in this set

Card 2

Front

name the parts of the drainage baisin

Back

watershed, tributary, source, confluence and mouth

Card 3

Front

name the types of weathering

Back

Preview of the front of card 3

Card 4

Front

describe the courses of a river

Back

Preview of the front of card 4

Card 5

Front

name the processes of erosion

Back

Preview of the front of card 5
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