River processes

Full name:

Class:

1. The material carried by a river is usually referred to as its

• silt.
• mud.
• load.
• alluvium.

2. The erosive power of a river depends most upon its

• speed and depth.
• speed and volume.
• gradient and width.
• gradient and depth.

3. The dissolving by water of certain minerals of the river channel is known as

• solution.
• attrition.
• corrasion.
• transportation.

4. Which one of the following pairs of transport process is responsible for moving the bedload of a river?

• Suspension and traction
• Suspension and saltation
• Traction and saltation
• Traction and solution

5. When rocks that are carried by the river scrape away the bed and banks it is called:

• Hydraulic action
• Abrasion
• Attrition
• Solution

6. Which process involves small pebbles and stones being bounced along the river bed?

• Suspension
• Saltation
• Traction
• Solution

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

• Solution
• Suspension
• Traction
• Saltation

8. Which of the following is NOT a type of river erosion?

• Abrasion
• Suspension
• Solution
• Attrition