Rivers Flashcards
Drainage basin?
the catchment area for precipitation then it drains to the river
Watershed?
the boundary of the drainage basin
Tributary
a smaller river flowing into a bigger river
Confluence
where 2 rivers meet
Highest waterfall in the world?
angel falls
Long profile of a river?
cut lengthways
Plan view of a river?
birds eye view
Cross-section of a river?
cut across the width
Upper course of a river?
āvā shaped valley (steep sides)
Middle course of a river?
small flood plain develops
Lower course of a river?
wide flood plain, sides erode
Solution?
minerals from rocks dissolved in water
Suspension?
(Silty,murky brown) clay-sized particles carried along by the river
Saltation?
pebbles and small stones bounce along the river bed
Traction?
largest material (rocks) are dragged along the bed of the river
Carrying capacity?
a maximum amount of water a channel is able to hold
Flash flood?
A flood that occurs quickly when water travels quickly down from high ground
Lots of UK rivers start with?
A bog
Gorge lies where?
Downstream from a waterfall at upper course
Estury?
Mud dried out and industry built on
Percolation?
Water passes through soil
Longest river in UK?
Severn
Flood?
When a river bursts its banks and overflows onto land that is normally dry
RIVER SEVERN CASE STUDY?
flood
short term effects
(3)
bridges collapse
motorists stranded
no electricity
RIVER SEVERN CASE STUDY?
flood
long term effects
(4)
damage to homes & businesses
crops lost
insurance claims
people die
Flood management techniques?
4
afforestation
reservoir & dam
flood basin
sluice gates
