Coastal Erosion Quiz

What is the process called where the power of the wave forces water and air into cracks in the rock, causing the rock to fracture and create faults and notches?

• Abrasion

• Attrition

• Hydraulic action

• Solution

Which type of coastal erosion involves the waves picking up rocks from the sea and throwing them against the cliffs, thereby smoothing the rock surface?

• Hydraulic action

• Abrasion

• Attrition

• Solution

During the process of attrition, what happens to the rocks?

What is the effect of solution (corrosion) on rocks like limestone?

What is the direction of longshore drift as shown in the diagram?

• From left to right

• From right to left

• From top to bottom

• From bottom to top

What is the primary purpose of hard engineering in coastal management?

• To enhance the natural beauty of the coast

• To build structures that protect the coast, though they tend to be expensive

• To create recreational areas along the coast

• To promote the growth of marine life

Which type of coastal management involves working with nature and might allow nature to take back areas?

• Hard engineering

• Soft engineering

• Urban development

• Industrial development

What is a disadvantage of using sea walls as a coastal defense mechanism?

• They are inexpensive and easy to maintain

• They are considered unattractive and require constant maintenance

• They naturally blend with the coastal landscape

• They increase the sediment on the beach

Which coastal defense structure is noted for absorbing wave energy using small rocks encased in wire cages?

• Sea wall

• Rock armour

• Gabions

• Groynes

What is the main advantage of beach recharge in coastal management?

• It is the cheapest method available

• It helps in creating artificial habitats inland

• It maintains the size of the beach and appears natural

• It requires no maintenance