GEOGRAPHY (rivers)

what can rivers be used 4?
transport/trade, irrigation (farming), renewable energy source, sport n recreation, tourism
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what is the beginning of a iver called and what is it?
the source - the beginning of the river
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what is a confluence?
where two rivers meet
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what is one part of a confluence called?
a tributary
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what is the water shed?
the outside of the drainage basin
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what is the main part of the rivver called?
the main channel
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what are these all features of?
a drainage basin
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define drainage basin
the area which surronds and is drained by a particlar river
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define tribtary
a river or stream which flows in another river
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define mouth
when the river meets a body of water
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define source
the origin of the river
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define water shed
the line of high land which marks the edge of the drainage basin
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define channel
this is where the river flows
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define confluence
when two tributaries meet
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what iss the process where water changes from a liquid ton a vapor
evaporation
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define condensation
the process by which cooling vapour turns into a liquid
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water that falls on the earths surface e,g. rain, snow, hail
precipitation
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define surface runoff
the movement of water over the land, possibly as a river
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plants giving off water vapour from their leaves
transpiration
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define groundwater
water that has snk through the soil into the rocks below
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features of the upper course?
narrow and shallow river, waterfalls, hills n mountains, jagged boulders, erodes and transports
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features of the middle course?
large floodplains,winds throgh land,closer to sea level, erosion causes the river to be smoother and smaller, erosion on outised and deposition on the inside
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featres of the lower course?
wide and deep, meanders and oxbow lakes, large floodplains, reaches the sea, sea level, small n smooth particles, depositing remaining sediment
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what are the processes of erosion?
hydraulic action, abrasion, attrition, corosion
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hydraulic action?
the force ofthe water
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abrasion?
bed n banks worn down
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attrition?
rocks bump into each other
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corosion?
acids in the water dissolve
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what are the transportation processes?
saltation, suspension, solution, traction
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saltation?
small stones bounce
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suspension?
carried by turbulence
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solution?
material dissolves
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traction?
large rocks are rolled
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defien erosion
water is moving quickly downhill and has lots of energy
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define weathering
the wearing away of rocks and soils by the weather (wind and rain)
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1st stages of waterfalls
undercutting
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2nd stage of waterfalls
overhanging and collapsing
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3rd stage of waterfalls
rocks crash into pools
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4th stage of waterfalls
repeat.
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Other cards in this set

Card 2

Front

what is the beginning of a iver called and what is it?

Back

the source - the beginning of the river

Card 3

Front

what is a confluence?

Back

Preview of the front of card 3

Card 4

Front

what is one part of a confluence called?

Back

Preview of the front of card 4

Card 5

Front

what is the water shed?

Back

Preview of the front of card 5
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