Coastal Erosion Quiz 2

What is coastal erosion?

• Temporary flooding of the shoreline

• Permanent loss of land along the shoreline

• Temporary movement of sand on the beach

• Formation of new land along the coast

Which of the following is a natural cause of coastal erosion?

• Sand extraction

• Rising sea levels

• Coral mining

• Seawalls construction

What human activity directly contributes to coastal erosion?

• Increasing wave height

• Coral mining

• Changes in wind patterns

• Reduction in reef sediment delivery

What is one effect of rising sea levels on coastal erosion?

• Decrease in wave height

• Expansion of coastal development

• Increased erosion of coastlines

• Improved sand retention on beaches

What role does wind play in shaping coastlines?

• Deposits mud and silt

• Erodes headlands and controls plant growth

• Prevents cliff erosion

• Strengthens coral reefs

Which type of weathering involves the breakdown of rock through chemical processes?

• Physical weathering

• Abrasion

• Chemical weathering

• Hydraulic action

How do caves, arches, and stacks form?

• By wind deposition of sand

• Through the erosion of softer rock by waves

• By human excavation

• Through volcanic activity

Which of the following describes hydraulic action?

• Material carried by waves bumping into each other

• The force of water compressing air in cracks, causing explosions

• Acids in seawater dissolving rocks

• The coast being worn down by particles carried by waves

Which material is particularly vulnerable to corrosion?

• Sandstone

• Limestone

• Granite

• Basalt

What is abrasion in the context of coastal erosion?

• The chemical reaction of seawater with rocks

• Waves compressing air into rock cracks

• The wearing down of the coast by material carried by waves

• The buildup of sediment along the coastline