Coastal Erosion Quiz

What is the process of hydraulic action?

• Water dissolving limestone

• Waves compressing air in rock cracks causing rock to break

• Pebbles grinding against each other

• Wind blowing sand inland

What is attrition in coastal erosion?

• Waves creating notches in cliffs

• Air expanding and breaking rocks

• Particles colliding and breaking into smaller, rounder pieces

• Pebbles carried by wind inland

Which process involves acids in seawater dissolving rocks like chalk?

• Abrasion

• Attrition

• Hydraulic action

• Solution (corrosion)

Destructive waves are associated with:

• Gentle, sloping beaches

• Erosion and steep beaches

• Building up sand dunes

• Calm seas

Constructive waves create beaches that are:

• Steep and narrow

• Completely submerged

• Wide and gently sloping

• Full of rocks and no sand

Which type of coastline has rock layers running parallel to the sea?

• Concordant

• Discordant

• Uniform

• Vertical

In which country did families move repeatedly due to coastal erosion, losing meters of land annually?

• USA

• UK

• Vietnam

• Poland

What is a wave-cut platform?

• A beach formed by longshore drift

• A flat area left after cliff retreat

• A sandbar that joins an island

• A line of seaweed

What can form when two caves erode backward through a headland?

• Spit

• Stack

• Arch

• Notch

What is left when the roof of a sea arch collapses?

• Stack

• Tombolo

• Lagoon

• Cliff