Sand Dunes Quiz

What happens to sand dunes over time?

• They remain unchanged

• They may shift, erode, or disappear

• They grow indefinitely

• They become rocky

Why is managed retreat often unpopular?

• It is too expensive

• It destroys urban areas

• The flooded land is rural and attractive

• It causes pollution

What is a common use of the land affected by managed retreat?

• Industrial development

• Walking and bird watching

• Agricultural farming

• Urban housing

What is a benefit of managed retreat in terms of appearance?

• It creates an industrial landscape

• It creates a beautiful natural environment

• It leads to urban sprawl

• It results in barren land

What is the focus of the document?

• Hard engineering techniques

• Soft engineering options

• Environmental laws

• Construction safety

Which structure is built to prevent the movement of sand along the coast?

• Gabion

• Groyne

• Sea wall

• Rock armour

What is the name of the process where rocks are broken down by physical forces like temperature changes?

• Chemical weathering

• Mechanical weathering

• Erosion

• Deposition

What is the term for the process of waves breaking down rocks into smaller pieces?

• Attrition

• Abrasion

• Erosion

• Deposition

What is a disadvantage of using groynes for coastal defense?

• They are expensive to build.

• They require frequent monitoring.

• They disrupt beach access and trap litter.

• They are environmentally unfriendly.