k) Unit 2: Physical landscapes-Coastal landscapes

Which of the following processes is NOT a type of erosion?

• Hydraulic action

• Abrasion

• Attrition

• Deposition

What is the main cause of mechanical weathering?

• Rainwater containing weak acids

• The breakdown of rock by living things

• Water getting into cracks in the rock, freezing, and expanding

• The chemical action by seawater on some rocks

Which type of mass movement involves material shifting with a rotation?

• Soil creep

• Slides

• Slumping

• Rockfalls

What is the slowest downhill movement of soil called?

• Slides

• Slumps

• Soil creep

• Rockfalls

Which process involves waves crashing against rock and compressing the air in the cracks?

• Abrasion

• Attrition

• Hydraulic action

• Solution

What is the term for the chemical action by seawater on some rocks, especially limestone?

• Abrasion

• Attrition

• Solution

• Hydraulic action

What is the term for the process where eroded particles in the water scrape sand and rub against rock?

• Attrition

• Abrasion

• Solution

• Hydraulic action

Which of the following statements about longshore drift is correct?

• Waves follow the direction of the prevailing wind and usually approach the coast at an angle

• The backwash carries sand and gravel back down the beach at 180° to the coastline

• Sand and gravel move along the beach in a straight line

• The backwash pushes sand and gravel up the beach at a different angle

What are the main cause of coastal erosion?

• Destructive waves

• Constructive waves

• Tidal waves

• Seismic waves

What forms a bay on discordant coastlines?

• Resistant rock

• Less resistant rock

• Sand deposits

• Coral reefs