F.6 GCE Geog Erosion and Sub-aerial Processes Quiz

What is hydraulic action?

• The wearing away of rocks by sediment carried by water

• The breaking down of rocks due to the force of water entering cracks

• The chemical reaction of water with minerals in rocks

• The movement of rocks due to gravity

Which process involves the grinding away of rocks by particles in water?

• Hydraulic action

• Abrasion

• Attrition

• Solution

What happens during attrition?

• Rocks break down due to chemical reactions

• Rocks collide with each other and reduce in size and roundness

• Water freezes in rock cracks, causing expansion

• Water erodes rocks through high-pressure waves

Which of the following describes solution as a weathering process?

• Rocks are worn away by the movement of water

• Minerals dissolve in water, leading to rock degradation

• Freeze-thaw cycles cause physical breakdown of rocks

• Plant roots break apart rocks

Salt weathering primarily occurs in which environment?

• Mountainous regions

• Arid and coastal areas

• Tropical rainforests

• Glacial regions

Freeze-thaw weathering is most effective in which temperature condition?

• Constant high temperatures

• Alternating above and below freezing

• Extremely low temperatures

• High humidity conditions

Which type of biological weathering involves plants?

• Salt weathering

• Biological activity

• Slaking weathering

• Solution weathering

What characterizes slaking weathering?

• Rocks disintegrate due to water absorption and expansion

• Rocks chemically react with acidic rainwater

• Ice formation causes rock fragmentation

• Rocks are eroded by wind

Mass movements can be classified into which of the following?

• Erosion and deposition

• Slides, flows, and falls

• Chemical and physical weathering

• Hydraulic and abrasion processes

Which factor does NOT contribute to coastal erosion?

• Wave energy

• Rock type

• Vegetation cover

• Temperature fluctuations