Podcast
Questions and Answers
What causes the formation of a notch during the creation of a sea cave?
What causes the formation of a notch during the creation of a sea cave?
- Erosion from trapped air and wave action (correct)
- Changes in water temperature affecting rock integrity
- Only hydraulic action through high waves
- Collapsing rock from above the cave
How does a sea arch eventually form?
How does a sea arch eventually form?
- From the collapse of a coastal barrier that leads to a tunnel
- By the sea eroding a notch in two separate cliffs until they connect (correct)
- Through sediment deposition between two sea caves
- When wave action erodes the land from beneath an overhanging rock
What typically occurs to the roof of a sea arch over time?
What typically occurs to the roof of a sea arch over time?
- It becomes thicker and stronger due to weathering
- It remains unchanged until it collapses abruptly
- It weakens and eventually collapses into the sea (correct)
- It reabsorbs moisture and expands
What is formed after the collapse of a sea arch?
What is formed after the collapse of a sea arch?
What is a sea stump?
What is a sea stump?
Flashcards
Sea Cave Formation
Sea Cave Formation
Waves erode weak areas at the cliff bottom, creating a cave.
How does a Sea Arch form?
How does a Sea Arch form?
A sea arch forms when a cave erodes through a headland, joining two sides.
Erosion Processes
Erosion Processes
Hydraulic action, abrasion, and compressed air erode rock leading to notches.
Sea Stack Formation
Sea Stack Formation
Signup and view all the flashcards
Sea Stump
Sea Stump
Signup and view all the flashcards
Study Notes
Formation of Sea Caves and Arches
- Waves erode weak and soft areas at the base of cliffs.
- Hydraulic action, abrasion, and compressed air erode a notch in the rock.
- The force of water erodes the notch, making it bigger.
- A cave erodes all the way through a headland, forming a sea arch.
- A sea arch can also form if two caves on either side of a headland join.
Formation of Sea Stacks
- Over time, the roof of a sea arch weakens due to weathering and erosion.
- The roof collapses into the sea.
- The outside rock is left standing alone in the water, separated from the mainland.
- This isolated rock is called a sea stack.
- Eventually, the sea stack is broken down into a small pile of rock called a sea stump.
- Example: Downpatrick Head, County Mayo.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
