Topic 4 Quiz

What is the process called when rocks bash together to become smooth and smaller?

• Solution

• Attrition

• Abrasion

• Hydraulic Action

Which type of weathering involves the breakdown of rock by changing its chemical composition?

• Mechanical

• Carbonation

• Attrition

• Solution

What is the term for sediment being carried along in the flow of the water?

• Traction

• Saltation

• Suspension

• Solution

What happens during the process of deposition?

• Rocks are dissolved by chemical reactions.

• Sediment is carried along in the flow of the water.

• The sea or river drops the sand, rock particles, and pebbles it has been carrying.

• Rocks bash together to become smooth and smaller.

What type of wave has a swash that is stronger than the backwash?

• Destructive Waves

• Constructive Waves

• Mechanical Waves

• Hydraulic Waves

What is the main purpose of groynes in coastal defense?

• To absorb wave energy

• To prevent longshore drift

• To create wildlife habitats

• To increase beach tourism

Which of the following is a soft engineering method for river management?

• Straightening Channel

• Artificial Levees

• Afforestation

• Deepening River

What is the term for water lost through the leaves of plants?

• Precipitation

• Infiltration

• Transpiration

• Surface Runoff

What happens during the 'lag time' in a hydrograph?

• Increase in river discharge

• Decrease in river discharge

• Delay between peak rainfall and peak discharge

• Discharge returns to normal level

What is the main feature of the lower course of a river?

• Steep gradient

• Formation of rapids

• Material transported is deposited

• Narrow valleys