Coastal Erosion Features and Processes

The video explains the formation of coastal features such as caves, arches, stacks, and stumps. It begins with the identification of weaknesses in headlands, leading to cave formation. Over time, these caves develop into arches, which eventually collapse to form stacks. Further erosion transforms stacks into stumps. The process is illustrated with visuals, emphasizing the sequence and conditions necessary for each feature's development.

What is the sequence of formation for coastal erosion features discussed in the video?

• Stacks, caves, arches, stumps

• Caves, arches, stacks, stumps

• Arches, caves, stumps, stacks

• Caves, stacks, arches, stumps

What is necessary for the formation of caves, arches, stacks, and stumps?

• A river delta

• A coral reef

• A headland

• A sandy beach

How do waves contribute to the formation of caves?

• By depositing sand

• Through refraction and bending around the headland

• By creating tidal pools

• By increasing water temperature

What happens when a cave extends through a headland?

• A beach forms

• A stack forms

• A stump forms

• An arch forms

Why is the roof of an arch considered unstable?

• Due to the presence of vegetation

• Due to its height

• Because of weathering and erosion

• Because it is made of sand

What remains after the collapse of an arch?

• A cave

• A stack

• A dune

• A beach

What type of erosion affects the base of a stack?

• Biological erosion

• Chemical erosion

• Wind erosion

• Hydraulic action and abrasion

What can cause a stack to collapse into a stump?

• A large wave or storm conditions

• An increase in vegetation

• A decrease in sea level

• A volcanic eruption

What is the final stage in the transformation of coastal erosion features?

• Formation of a stack

• Formation of an arch

• Formation of a cave

• Formation of a stump

What is the primary cause of the narrowing of a stack?

• Human intervention

• Tectonic activity

• Hydraulic action and abrasion

• Wind erosion