Building Code Administrators and Inspectors Florida Principle and Practice Licensure Practice Exam

What is a mound or ridge of loose sediments lying landward of the beach called?

1. Coastal barrier islands

2. Dune

3. Beach

4. Minor structure

The correct answer is: Dune

A mound or ridge of loose sediments lying landward of the beach is referred to as a dune. Dunes are formed by the action of wind blowing sand from the beach and depositing it in higher elevations, which can help protect inland areas from storm surge and erosion. They often play a crucial role in coastal ecosystems and can vary in size and shape based on factors such as vegetation, wind direction, and the supply of sand. In contrast, coastal barrier islands refer to elongated landforms that run parallel to the mainland and are often separated from it by a lagoon or estuary. While beaches are the sandy areas directly along the shoreline where people typically gather, minor structures may refer to smaller construction elements that don't provide the same ecological function or protection as dunes. Understanding the characteristics and functions of dunes is important for coastal management and environmental conservation efforts.