Rivers Flashcards
What is a Flash Flood
High volumes of water in a short space of time
Very hard baked ground cannot absorb water. This increases overland low causing rivers to overflow.
What is Abstraction of Water
Taking water from a source. This can be surface water or ground water.
What is Aguifers - Abstraction
These are ground water stores found in porous rock types such as chalk.
What is Re-Charge
Water entering an Aguifer
What is Discharge
Water leaving an Aguifer
What is Overabstraction
When Discharge is higher than Re-charge
Why is water abstracted from Aguifers?
Drinking Water
Farming + Irrigation
Industry
The chalk filters the water which is very pure.
Attrition
Rocks collide
Solution/Corrosion
Rocks dissolve
Suspension
Clay + Sediment carried in a river
Saltation
Small rocks and pebbles bounce along the river bed
Traction
Large rocks and boulders
Hydraulic Action
Force of the water
Abrasion
Scraping