71959
Description
Mind Map by crazyhipsterlove, updated more than 1 year ago
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Created by crazyhipsterlove
almost 11 years ago
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Rivers
- Processes
of erosion
- Hydraulic action
- The force of the
water breaks
rock patrticals
away from the
river channel
- The force of the
water breaks
rock patrticals
away from the
river channel
- Corrasion
- Eroded rocks picked up
by the river scrape and
rub against the channel
wearing it away. Most
errosion happens
thisway.
- Eroded rocks picked up
by the river scrape and
rub against the channel
wearing it away. Most
errosion happens
thisway.
- Attrition
- Eroded rocks picked up by
the river smash into each
other and break into smaller
fragments.
- Eroded rocks picked up by
the river smash into each
other and break into smaller
fragments.
- Corrosion
- River water
dissolves
some types of
rock;
limestone,
chalk
- River water
dissolves
some types of
rock;
limestone,
chalk
- Hydraulic action
- Drainage basins
- Transportaition
- The material the river has
eroded is transported
downstream there are four
main processes of
transportation
- Traction
- Large particles are
like boulders being
pushed along the river
bed by the force of
water
- Large particles are
like boulders being
pushed along the river
bed by the force of
water
- Suspension
- Small particles like
silt and clay are
carried along by the
water.
- Small particles like
silt and clay are
carried along by the
water.
- Saltation
- Pebble sized
particles are bounced
along the river bed by
the force of the water.
- Pebble sized
particles are bounced
along the river bed by
the force of the water.
- Soloution
- Soluble
materials dissolve
in the water and
are carried along
- Soluble
materials dissolve
in the water and
are carried along
- Traction
- The material the river has
eroded is transported
downstream there are four
main processes of
transportation
- Deposition
- Depostition is when a
river drops the eroded
material it's transporting
- It happens when
a river slows
down (looses
velocity)
- There are few
resaons why
rivers slow
down and
deposit
material
- The volume of
water in the river
falls
- The amount
of eroded
material in the
water increases
- The water is
shallower e.g
on the inside of
a bend
- The river
reaches its
mouth
- The volume of
water in the river
falls
- Depostition is when a
river drops the eroded
material it's transporting
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