Rivers and Flooding revision

Which of these is not an erosional process?

• Traction

• Abrasion

• Attrition

• Solution

Which of these best describes abrasion?

• The sheer force of the water forces air to be compressed in cracks, this breaks apart the rock.

• Minerals (acids) in the water dissolve the rock

• Small rocks are smashed against the river banks and wear it away like sandpaper

• Rocks crash into eachother and break apart

Which landforms can be found in the Upper course of the river?

• meander

• flood plain

• V shaped valley

• waterfall

The pool at the bottom of a waterfall is called a ______ pool

Soft rock erodes faster than hard rock because...

• it just does

• more resistant to erosional processes

• less resistant to erosional processes

At a meander, water flows fastest at the...

• inside bend

• outside bend

• middle

Deposition occurs at the inside bend meaning we see the formation of a...

• wave cut platform

• river cliff

• slip-off slope/ river beach

• stack

Select the FLOWS in a river basin

• infiltration

• percolation

• transpiration

• all of the above

Select the STORES in a river basin

• infiltration

• ground water

• surface runoff

• lakes/ ponds

Which 2 of these are PHYSICAL causes of flooding?

• Urbanisation

• Extended periods of heavy rainfall

• Deforestation

• Impermeable rock