Revision - River Environments

What are the characteristics of the upper course of a river?

• Wide, deep channel

• Shallow, narrow channel

• Widest, deepest channel

• They all are

What are the characteristics of the lower course of a river?

• Wide, deep channel

• Shallow, narrow channel

• Widest, deepest channel

Which of the following are fluvial processes?

• Erosion

• Transportation

• Deposition

• All of the above

What is a drainage basin?

• An area of land drained by a river and its tributaries.

• The journey a river takes from source to mouth.

• The point where a river begins.

True or false? The discharge of a river increases along its course as tributaries join it adding more water.

• True

• False

Which of the following are types of fluvial erosion?

• Hydraulic action, abrasion, solution and longshore drift

• Hydraulic action, abrasion, solution and suspension.

• Hydraulic action, abrasion, solution and attrition.

• Hydraulic action, abrasion, solution and traction

Traction refers to the way in which material in the river's load are bounced along the riverbed

• True

• False

When soluble particles are dissolved into the river it is called:

• Hydraulic Action

• Abrasion

• Saltation

• Solution

Which process involves large boulders and rocks being rolled along the river bed?

• Saltation

• Traction

• Suspension

• Solution

Which Process involves small pebbles and stones being bounced along the river bed?

• Solution

• Traction

• Saltation

• none of the above