Types of Erosion Quiz

What is erosion in the context of river processes?

• The process that builds up the river banks

• The process that changes the river's color

• The process that wears away the river bed and banks

• The process that increases the river's water volume

Which type of erosion involves the sheer power of water smashing against the river banks?

• Solution

• Hydraulic action

• Attrition

• Abrasion

What happens during abrasion?

• Air becomes trapped in cracks

• Pebbles grind along the river bank and bed

• Water dissolves certain types of rocks

• Rocks knock against each other

Which type of erosion involves rocks carried by the river knocking against each other?

• Solution

• Hydraulic action

• Attrition

• Abrasion

What is the result of attrition?

• Rocks form new minerals

• Rocks dissolve completely

• Rocks become smaller and more rounded

• Rocks become larger and more angular

Which type of erosion involves water dissolving certain types of rocks?

• Attrition

• Hydraulic action

• Abrasion

• Solution

What is the effect of hydraulic action on river banks?

• It traps air in cracks causing rocks to break apart

• It smoothens the river banks

• It deposits sediment on the river banks

• It dissolves the river banks

Which type of rock is commonly dissolved by the solution process?

• Granite

• Basalt

• Limestone

• Sandstone

What is the main cause of abrasion in rivers?

• Air trapped in cracks

• Pebbles grinding along the river bed

• Water pressure

• Chemical reactions

How does attrition affect the size of rocks in a river?

• It increases their size

• It has no effect on their size

• It keeps their size constant

• It reduces their size