452528
Beschreibung
Mindmap von Emily Gibson, aktualisiert more than 1 year ago
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Erstellt von Emily Gibson
vor fast 11 Jahre
|
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River
landforms
- Erosional
- Waterfalls
- Softer rock is
eroded more
than the hard
rock - creating 'step'
- Eventually
creates steep
drop
- Hard rock
collapses as
unsupported
- Plunge pool created
by collapsed rock -
swirls around and
erodes bottom
- Plunge pool created
by collapsed rock -
swirls around and
erodes bottom
- Hard rock
collapses as
unsupported
- Eventually
creates steep
drop
- Softer rock is
eroded more
than the hard
rock - creating 'step'
- Gorges
- When a waterfall
completely retreats
- When a waterfall
completely retreats
- Interlocking spurs
- Rivers aren't
powerful enough
to erode
sideways
- Have to wind
round hillsides
- Hillsides that interlock as
river winds round them
- Hillsides that interlock as
river winds round them
- Have to wind
round hillsides
- Rivers aren't
powerful enough
to erode
sideways
- Waterfalls
- Erosional and depositional
- Meanders
- Current is faster
on outside
- So more erosion
- So more erosion
- Current is slower
on inside
- So eroded material deposited
- So eroded material deposited
- Current is faster
on outside
- Oxbow lake
- Outside bends get
closer (erosion)
- Only small bit of
land left - neck
- Only small bit of
land left - neck
- River breaks through
- River flows along
shortest route
- River flows along
shortest route
- Deposition cuts off
the meander
- Form from meanders
- Outside bends get
closer (erosion)
- Meanders
- Depositional
- Flood plains
- Wide valley floor
on ether side of
river
- When river floods it
deposits eroded material
- Builds up -
makes it
higher
- Builds up -
makes it
higher
- Wide valley floor
on ether side of
river
- Leeves
- Natural embankments
- Heaviest material deposited
closest to river (dropped first)
- Natural embankments
- Deltas
- Material builds up forming
low lying land
- Rivers slow down when
meet sea or lake -
deposit material
- Material builds up forming
low lying land
- Flood plains
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