CCEA Geography Theme A River Processes Quiz

During a geography field trip, Arjun observed a river. What is hydraulic action in a river?

• The pressure of flowing water against the channel’s bed and banks, forcing its way into cracks and wearing away the land

• Rocks crashing together and breaking into smaller particles

• Soluble particles being dissolved by river water

• The force of water armed with stones grinding the channel

Which type of river transportation involves minerals being dissolved in water?

• Suspension

• Saltation

• Solution

• Traction

Amelia and Ishaan are observing a river. What happens during the process of attrition?

• Rocks carried by the river crash together and break into smaller particles

• Rocks are dissolved by slightly acidic water

• Fine light material is carried along in the flow of the water

• The river's load is too heavy and is deposited

What is the main cause of deposition in a river?

• The river's load being light

• High energy levels

• The river losing energy

• Increased river velocity

During a geography field trip, Daniel observed medium sized pebbles and stones being bounced along the river bed. Which process is he witnessing?

• Traction

• Suspension

• Solution

• Saltation

What is the result of abrasion in river processes?

• Rocks are dissolved by acidic water

• The river's load is deposited

• The channel is worn down like sandpaper

• Rocks crash together and break

Where is deposition most common in a river?

• Near the source

• In the middle course

• Towards the end of the river's journey

• At the highest energy levels

During a geography class, Sophie learned about different types of transportation. Which type of transportation is when very small material is carried along (held up) in the flow of the water

• Solution

• Saltation

• Abrasion

• Suspension

Mira and Noah are observing a riverbed. What is the primary factor that allows traction to occur in the riverbed?

• Dissolved minerals

• Low energy levels

• High energy levels

• Fine light material

Traction is when ​ (a)   rocks ​ (b)   along the river bed. Usually during a flood or high energy flow

• large
• roll
• medium sized
• small
• bounce