Basic River Knowledge Flashcards
What is Hydraulic action?
The force of the river against the banks can cause air to be trapped in cracks and crevices. The pressure weakens the banks and gradually wears it away.
What is Abrasion?
Rocks carried along by the river wear down the river bed and banks.
What is Attrition?
Rocks being carried by the river smash together and break into smaller, smoother and rounder particles.
What is Solution?
Soluble particles are dissolved into the river.
What is River Erosion?
Erosion is the wearing away of rock and soil found along the river bed and banks. Erosion also involves the breaking down of the rock particles being carried downstream by the river.
What happens when river energy is high?
Large rocks and boulders can be transported.
What happens when river energy is low?
Only small particles can be transported (if any).
Where will river energy be high?
Near the source
Where will river energy be low?
Near the mouth
What can deposition form?
Deltas
