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Coastal erosion is the wearing away of land along the coastline by waves, currents, tides, and wind.
The building up of land from deposited sediment
The wearing away of land by the sea
The sinking of land due to earthquakes
Which of the following primarily contributes to coastal erosion?
Wave action
Forest growth
Mountain formation
What term describes sand and soil being carried along the shore by current and wave action?
Longshore drift
Earthquake uplift
Plate tectonics
Sea level rise causes coastal erosion because it increases wave impact on the shore.
It decreases wave energy
False
True
Which of these is a natural process that changes the coastline over time?
Car engine exhaust
Hydraulic action
Asteroid impacts
Abrasion in coastal erosion refers to rocks and sediment being hurled against cliffs by waves.
False
It refers to wind blowing inland
True
What kind of wave action can most rapidly erode a cliff face?
Constructive waves
Destructive waves
Silent waves
Human activities like coastal development can increase erosion by disrupting sediment flow.
True
It prevents all erosion entirely
False
Deposition is the opposite of coastal erosion and involves materials being dropped along the shore.
It means the sea level rises permanently
False
True
Waves, currents, and wind reshape shorelines by removing and depositing sediment over time.
False
They only affect underwater landscapes
True
Which of the following is NOT a cause of coastal erosion?
Tree planting on dunes
Strong wind
Storm surge
A coastline can slowly retreat over years due to the net removal of sediment.
True
False
It becomes permanently fixed
Which of these human actions can worsen coastal erosion?
Sand mining from beaches
Building coral reefs
Planting mangroves
What is the loss of land along the coast called?
Ocean expansion
Coastal erosion
Volcanic intrusion
Storm surges associated with severe weather can dramatically accelerate coastal erosion.
False
True
A storm surge always builds up beaches
Climate change is expected to increase coastal erosion through higher sea levels.
False
It decreases sea levels
True
