Coastal and Glacial Geology Concepts

The video explores the impact of longshore currents on coastal erosion, explaining how they move sand to form sand bars and barrier islands. It also covers wind-formed features like dunes and loess, highlighting their formation and significance. The video concludes with a discussion on glaciers, their erosional power, and the creation of kettle lakes.

What is the primary direction of longshore currents along the beach?

• Circular around the shore

• Diagonal to the shore

• Parallel to the shore

• Perpendicular to the shore

How do longshore currents contribute to the formation of barrier islands?

• By creating underwater caves

• By depositing sand parallel to the shore

• By forming coral reefs

• By eroding the mainland

What is a spit in the context of coastal geography?

• A mountain range

• A deep sea trench

• A type of coral reef

• A sandbar connected to the mainland at one end

Which feature is formed by wind and consists of a mound of sand?

• Moraines

• Loess

• Kettle Lake

• Dune

What is loess primarily composed of?

• Gravel

• Ice

• Soil

• Sand

What causes the formation of glaciers?

• Tectonic movements

• Accumulation of unmelted snow

• Erosion by wind

• Volcanic activity

Which type of glacier is found on mountains?

• Alpine glacier

• Sea ice

• Continental glacier

• Iceberg

What is the term for sediment deposited by glaciers?

• Loess

• Spit

• Dune

• Till

What is a moraine?

• A type of volcanic rock

• A deep ocean trench

• A mound of till deposited by a glacier

• A type of sand dune

How are kettle lakes formed?

• By volcanic eruptions

• By receding glaciers

• By tectonic shifts

• By river erosion