Shoreline Erosion and Coastal Features

The video explores shoreline processes and features, detailing how forces like wave impact, abrasion, and refraction shape shorelines through erosion and deposition. It explains the formation of features such as cliffs, sea arches, stacks, spits, sandbars, and tombolos. The video concludes with methods to stabilize shorelines, including protective structures and beach nourishment.

What is the primary force that causes weathering and erosion on shorelines?

• Wave impact

• Rainfall

• Tidal forces

• Wind impact

How does abrasion contribute to shoreline erosion?

• By freezing and thawing

• By grinding away materials with sediment

• By dissolving rocks

• By chemical reactions

What happens during wave refraction?

• Waves increase in speed

• Waves bend around obstacles

• Waves stop moving

• Waves decrease in height

What is longshore transport?

• Erosion of cliffs by waves

• Transport of sediment along the coast

• Movement of water parallel to the shore

• Deposition of sand in deep water

Which feature is formed when a cliff collapses into the sea?

• Barrier island

• Spit

• Sea stack

• Sea arch

What is a spit in terms of shoreline features?

• A narrow point of land projecting into the sea

• A lagoon formed by a sandbar

• A sandbar that connects two islands

• A ridge of sand extending from the shore

How is a tombolo formed?

• By longshore drift

• By wave refraction

• By deposition connecting an island to the shore

• By erosion of a cliff

What is the purpose of a breakwater?

• To increase wave energy

• To protect the shore by breaking waves

• To create new beaches

• To connect islands

What is beach nourishment?

• Adding sand to a beach to combat erosion

• Removing sand from a beach

• Building a seawall

• Creating artificial reefs

Which structure is typically built to protect harbor entrances?

• Breakwater

• Seawall

• Jetty

• Groin