Here’s a set of flashcards based on the key points and formation of coastal landforms from your document:
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### Flashcard 1: Coastal Processes
Q: What are the key factors influencing coastal processes?
A: Coastal processes are influenced by waves, tides, and currents. Tides determine wave height and depth, while waves erode, transport, and deposit materials.
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### Flashcard 2: Types of Waves
Q: How do constructive and destructive waves differ?
A:
- Constructive Waves: Low frequency, long wavelength, deposit material, form sandy beaches.
- Destructive Waves: High frequency, steep gradient, erode material, form shingle beaches.
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### Flashcard 3: Marine Erosion Processes
Q: What are the main processes of marine erosion?
A:
- Hydraulic Action: Water forces air into cracks, creating pressure.
- Abrasion: Sand and pebbles grind against rocks.
- Attrition: Material collides, breaking into smaller pieces.
- Corrosion: Chemical reactions dissolve rock.
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### Flashcard 4: Longshore Drift
Q: What is longshore drift?
A: Sediment transportation along the coast in a zig-zag pattern, caused by swash moving material up the beach at an angle and backwash returning it at 90°.
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### Flashcard 5: Cliffs and Wave-Cut Platforms
Q: How are cliffs and wave-cut platforms formed?
A:
1. Erosion at the base creates a wave-cut notch.
2. Undercutting causes the cliff to collapse.
3. Debris is removed by backwash, exposing a wave-cut platform.
4. The cliff retreats over time.
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### Flashcard 6: Headlands and Bays
Q: How do headlands and bays form?
A:
- Formed on discordant coastlines where alternating hard (resistant) and soft (less resistant) rocks exist.
- Soft rock erodes to form bays, while hard rock remains as headlands.
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### Flashcard 7: Caves, Arches, Stacks, and Stumps
Q: Outline the formation process of a cave, arch, stack, and stump.
A:
1. Cave: Waves exploit cracks in a headland through erosion.
2. Arch: The cave enlarges and breaks through.
3. Stack: The arch collapses, leaving an isolated column.
4. Stump: The stack erodes and collapses into a stump.
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### Flashcard 8: Beaches
Q: How are beaches formed?
A: Formed in sheltered areas like bays by constructive waves depositing sand or shingle. Strong swash deposits material; weak backwash removes smaller particles.
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### Flashcard 9: Spits
Q: What are spits, and how do they form?
A:
- A spit is a long, narrow stretch of sand or shingle extending into the sea.
- Formed by longshore drift depositing material where the coastline changes direction or at river mouths.
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### Flashcard 10: Bars and Lagoons
Q: How do bars and lagoons form?
A:
- Bar: When a spit grows across a bay, joining two headlands.
- Lagoon: A body of water trapped behind a bar.
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### Flashcard 11: Tombolos
Q: What is a tombolo?
A: A depositional landform where a spit connects the mainland to an island, e.g., Chesil Beach in Dorset.
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### Flashcard 12: Sand Dunes
Q: What are the stages of sand dune formation?
A:
1. Embryo Dunes: Sand accumulates against obstacles.
2. Fore Dunes: Stabilized by Marram Grass.
3. Yellow Dunes: Organic material darkens the sand.
4. Grey Dunes: Increased stability and biodiversity.
5. Mature Dunes: Fully stabilized, support climax vegetation.
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### Flashcard 13: Coral Reefs
Q: What are the three types of coral reefs?
A:
- Fringing Reefs: Directly attached to the shore.
- Barrier Reefs: Separated from land by a lagoon.
- Atolls: Circular reefs with a central lagoon.
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### Flashcard 14: Coastal Management
Q: What are examples of hard and soft engineering techniques?
A:
- Hard Engineering: Sea walls, groynes, rip-rap, and breakwaters.
- Soft Engineering: Beach nourishment, dune stabilization, and marshland creation.
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Let me know if you'd like additional details or more flashcards!