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Coastal processes & landforms

Explore constructive and destructive waves, longshore drift, headlands, spits, atolls and coastal defences. Review suitability for your learners before teaching.

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Worksheet StudioPractice pack · Ages 13-15

Coastal processes & landforms

Take your time. Show your thinking.

1. What is “beach nourishment” (beach replenishment) as a soft-engineering coastal defence: pumping or trucking sand onto an eroding beach to widen it naturally, or building a concrete tower?
“beach nourishment” · Coastal processes & landfo…
2. In tropical oceans, what ring-shaped coral reef encloses a central lagoon after the central volcanic island has gradually subsided beneath the sea: an atoll or a fjord?
In tropical oceans, what r… · Coastal processes & landfo…
3. Which coastal trees with tangled prop roots and breathing roots (pneumatophores) grow in sheltered tropical intertidal mudflats and protect coastlines from storm surges: mangroves or pine trees?
Which coastal trees with t… · Coastal processes & landfo…
4. Why are healthy offshore coral reefs one of the most effective natural coastal defences for tropical islands: the shallow reef crest breaks incoming ocean swells and absorbs up to 90%+ of wave energy before it reaches the beach, or reefs stop the wind?
90% · Coastal processes & landfo…
5. When a sand spit grows all the way across a bay to connect two headlands, trapping a shallow freshwater or brackish lake behind it, what is the ridge called: a bar (bay bar) or a cave?
When a sand spit grows all… · Coastal processes & landfo…
6. When waves erode the base of a cliff between high-tide and low-tide levels, what undercut indentation is carved into the foot of the cliff: a wave-cut notch or a sand spit?
When waves erode the base … · Coastal processes & landfo…
7. Which type of low-frequency, gentle wave has a strong swash and a weak backwash, building up sandy beaches: a constructive wave or a destructive wave?
Which type of low-frequenc… · Coastal processes & landfo…
8. Why does global sea-level rise increase coastal erosion and flooding on low-lying islands and coasts: higher water levels allow larger waves to break closer to shore and overtop natural ridges during high tides, or sea water becomes lighter?
Why does global sea-level … · Coastal processes & landfo…
9. What coastal deposition landform is a ridge of sand or shingle that links an offshore island to the mainland: a tombolo or a blowhole?
What coastal deposition la… · Coastal processes & landfo…
10. What piles of large, heavy granite boulders placed at the foot of a cliff or sea wall break up incoming waves and absorb their energy: rock armour (riprap) or sand dunes?
What piles of large, heavy… · Coastal processes & landfo…
11. Which type of steep, high-energy storm wave has a weak swash and a powerful backwash that erodes beaches: a destructive wave or a constructive wave?
Which type of steep, high-… · Coastal processes & landfo…
12. What narrow finger of sand or shingle is formed by longshore drift extending out from the coast where the shoreline changes direction at a river mouth: a spit or a sea stack?
What narrow finger of sand… · Coastal processes & landfo…

12 questions · Seed 43 · Age guidance, not curriculum certification

View the answer key

Worksheet StudioAnswer key · Ages 13-15

Coastal processes & landforms

Answers and reasoning. Review before teaching.

1. What is “beach nourishment” (beach replenishment) as a soft-engineering coastal defence: pumping or trucking sand onto an eroding beach to widen it naturally, or building a concrete tower?
Pumping or trucking sand onto an eroding beach to widen it naturally
A wider beach absorbs wave energy before waves reach the backshore, while keeping a natural appearance.
2. In tropical oceans, what ring-shaped coral reef encloses a central lagoon after the central volcanic island has gradually subsided beneath the sea: an atoll or a fjord?
Atoll
As a volcanic island slowly sinks, upward-growing fringing coral reefs evolve into a barrier reef and finally a ring-shaped atoll.
3. Which coastal trees with tangled prop roots and breathing roots (pneumatophores) grow in sheltered tropical intertidal mudflats and protect coastlines from storm surges: mangroves or pine trees?
Mangroves
Mangrove forests dissipate wave energy, trap sediment and serve as vital nurseries for juvenile reef fish.
4. Why are healthy offshore coral reefs one of the most effective natural coastal defences for tropical islands: the shallow reef crest breaks incoming ocean swells and absorbs up to 90%+ of wave energy before it reaches the beach, or reefs stop the wind?
The shallow reef crest breaks incoming ocean swells and absorbs up to 90%+ of wave energy before it reaches the beach
Intact coral reefs act as self-repairing submerged breakwaters.
5. When a sand spit grows all the way across a bay to connect two headlands, trapping a shallow freshwater or brackish lake behind it, what is the ridge called: a bar (bay bar) or a cave?
Bar (bay bar)
A bar seals off the entrance to a bay, enclosing a coastal lagoon behind it.
6. When waves erode the base of a cliff between high-tide and low-tide levels, what undercut indentation is carved into the foot of the cliff: a wave-cut notch or a sand spit?
Wave-cut notch
Continued undercutting at the wave-cut notch causes the overhanging cliff above to collapse.
7. Which type of low-frequency, gentle wave has a strong swash and a weak backwash, building up sandy beaches: a constructive wave or a destructive wave?
Constructive wave
Constructive waves deposit more sediment up the beach than they remove.
8. Why does global sea-level rise increase coastal erosion and flooding on low-lying islands and coasts: higher water levels allow larger waves to break closer to shore and overtop natural ridges during high tides, or sea water becomes lighter?
Higher water levels allow larger waves to break closer to shore and overtop natural ridges during high tides
Both thermal expansion of warming ocean water and melting land ice contribute to rising sea levels.
9. What coastal deposition landform is a ridge of sand or shingle that links an offshore island to the mainland: a tombolo or a blowhole?
Tombolo
Wave refraction around an nearshore island deposits a sand or shingle bridge called a tombolo.
10. What piles of large, heavy granite boulders placed at the foot of a cliff or sea wall break up incoming waves and absorb their energy: rock armour (riprap) or sand dunes?
Rock armour (riprap)
Gaps between the large boulders dissipate wave energy.
11. Which type of steep, high-energy storm wave has a weak swash and a powerful backwash that erodes beaches: a destructive wave or a constructive wave?
Destructive wave
Destructive waves scour sediment off the beach and hurl water against cliffs.
12. What narrow finger of sand or shingle is formed by longshore drift extending out from the coast where the shoreline changes direction at a river mouth: a spit or a sea stack?
Spit
Longshore drift continues depositing sand across a bend in the coast, building a long spit often curved at the tip by wind and waves.

12 questions · Seed 43 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 13-15

Coastal processes & landforms

Take your time. Show your thinking.

1. What is “beach nourishment” (beach replenishment) as a soft-engineering coastal defence: pumping or trucking sand onto an eroding beach to widen it naturally, or building a concrete tower?
“beach nourishment” · Coastal processes & landfo…
2. In tropical oceans, what ring-shaped coral reef encloses a central lagoon after the central volcanic island has gradually subsided beneath the sea: an atoll or a fjord?
In tropical oceans, what r… · Coastal processes & landfo…
3. Which coastal trees with tangled prop roots and breathing roots (pneumatophores) grow in sheltered tropical intertidal mudflats and protect coastlines from storm surges: mangroves or pine trees?
Which coastal trees with t… · Coastal processes & landfo…
4. Why are healthy offshore coral reefs one of the most effective natural coastal defences for tropical islands: the shallow reef crest breaks incoming ocean swells and absorbs up to 90%+ of wave energy before it reaches the beach, or reefs stop the wind?
90% · Coastal processes & landfo…
5. When a sand spit grows all the way across a bay to connect two headlands, trapping a shallow freshwater or brackish lake behind it, what is the ridge called: a bar (bay bar) or a cave?
When a sand spit grows all… · Coastal processes & landfo…
6. When waves erode the base of a cliff between high-tide and low-tide levels, what undercut indentation is carved into the foot of the cliff: a wave-cut notch or a sand spit?
When waves erode the base … · Coastal processes & landfo…
7. Which type of low-frequency, gentle wave has a strong swash and a weak backwash, building up sandy beaches: a constructive wave or a destructive wave?
Which type of low-frequenc… · Coastal processes & landfo…
8. Why does global sea-level rise increase coastal erosion and flooding on low-lying islands and coasts: higher water levels allow larger waves to break closer to shore and overtop natural ridges during high tides, or sea water becomes lighter?
Why does global sea-level … · Coastal processes & landfo…
9. What coastal deposition landform is a ridge of sand or shingle that links an offshore island to the mainland: a tombolo or a blowhole?
What coastal deposition la… · Coastal processes & landfo…
10. What piles of large, heavy granite boulders placed at the foot of a cliff or sea wall break up incoming waves and absorb their energy: rock armour (riprap) or sand dunes?
What piles of large, heavy… · Coastal processes & landfo…
11. Which type of steep, high-energy storm wave has a weak swash and a powerful backwash that erodes beaches: a destructive wave or a constructive wave?
Which type of steep, high-… · Coastal processes & landfo…
12. What narrow finger of sand or shingle is formed by longshore drift extending out from the coast where the shoreline changes direction at a river mouth: a spit or a sea stack?
What narrow finger of sand… · Coastal processes & landfo…

12 questions · Seed 43 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 13-15

Coastal processes & landforms

Answers and reasoning. Review before teaching.

1. What is “beach nourishment” (beach replenishment) as a soft-engineering coastal defence: pumping or trucking sand onto an eroding beach to widen it naturally, or building a concrete tower?
Pumping or trucking sand onto an eroding beach to widen it naturally
A wider beach absorbs wave energy before waves reach the backshore, while keeping a natural appearance.
2. In tropical oceans, what ring-shaped coral reef encloses a central lagoon after the central volcanic island has gradually subsided beneath the sea: an atoll or a fjord?
Atoll
As a volcanic island slowly sinks, upward-growing fringing coral reefs evolve into a barrier reef and finally a ring-shaped atoll.
3. Which coastal trees with tangled prop roots and breathing roots (pneumatophores) grow in sheltered tropical intertidal mudflats and protect coastlines from storm surges: mangroves or pine trees?
Mangroves
Mangrove forests dissipate wave energy, trap sediment and serve as vital nurseries for juvenile reef fish.
4. Why are healthy offshore coral reefs one of the most effective natural coastal defences for tropical islands: the shallow reef crest breaks incoming ocean swells and absorbs up to 90%+ of wave energy before it reaches the beach, or reefs stop the wind?
The shallow reef crest breaks incoming ocean swells and absorbs up to 90%+ of wave energy before it reaches the beach
Intact coral reefs act as self-repairing submerged breakwaters.
5. When a sand spit grows all the way across a bay to connect two headlands, trapping a shallow freshwater or brackish lake behind it, what is the ridge called: a bar (bay bar) or a cave?
Bar (bay bar)
A bar seals off the entrance to a bay, enclosing a coastal lagoon behind it.
6. When waves erode the base of a cliff between high-tide and low-tide levels, what undercut indentation is carved into the foot of the cliff: a wave-cut notch or a sand spit?
Wave-cut notch
Continued undercutting at the wave-cut notch causes the overhanging cliff above to collapse.
7. Which type of low-frequency, gentle wave has a strong swash and a weak backwash, building up sandy beaches: a constructive wave or a destructive wave?
Constructive wave
Constructive waves deposit more sediment up the beach than they remove.
8. Why does global sea-level rise increase coastal erosion and flooding on low-lying islands and coasts: higher water levels allow larger waves to break closer to shore and overtop natural ridges during high tides, or sea water becomes lighter?
Higher water levels allow larger waves to break closer to shore and overtop natural ridges during high tides
Both thermal expansion of warming ocean water and melting land ice contribute to rising sea levels.
9. What coastal deposition landform is a ridge of sand or shingle that links an offshore island to the mainland: a tombolo or a blowhole?
Tombolo
Wave refraction around an nearshore island deposits a sand or shingle bridge called a tombolo.
10. What piles of large, heavy granite boulders placed at the foot of a cliff or sea wall break up incoming waves and absorb their energy: rock armour (riprap) or sand dunes?
Rock armour (riprap)
Gaps between the large boulders dissipate wave energy.
11. Which type of steep, high-energy storm wave has a weak swash and a powerful backwash that erodes beaches: a destructive wave or a constructive wave?
Destructive wave
Destructive waves scour sediment off the beach and hurl water against cliffs.
12. What narrow finger of sand or shingle is formed by longshore drift extending out from the coast where the shoreline changes direction at a river mouth: a spit or a sea stack?
Spit
Longshore drift continues depositing sand across a bend in the coast, building a long spit often curved at the tip by wind and waves.

12 questions · Seed 43 · Age guidance, not curriculum certification