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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. As a cliff retreats inland through repeated undercutting and collapse, what gently sloping rocky ledge is left behind at low tide: a wave-cut platform or a lagoon?
As a cliff retreats inland… · Coastal processes & landfo…
2. How do marram grass and coastal vegetation help stabilise coastal sand dunes: their deep, matted roots bind loose sand grains together and stems slow the wind so more sand is deposited, or they melt the sand?
How do marram grass and co… · Coastal processes & landfo…
3. What is the correct sequence of landforms created as waves erode a weakness in a rocky headland: Crack → Cave → Arch → Stack → Stump, or Stack → Arch → Cave → Crack?
What is the correct sequen… · Coastal processes & landfo…
4. What is the zigzag movement of sand and shingle along a coastline caused by waves approaching the beach at an oblique angle: longshore drift or continental drift?
What is the zigzag movemen… · Coastal processes & landfo…
5. Which coastal erosion process occurs when breaking waves trap and compress air inside cracks in a cliff face, shattering the rock: hydraulic action or solution?
Which coastal erosion proc… · Coastal processes & landfo…
6. 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…
7. What curved concrete wall is built along the back of a shoreline to reflect wave energy and protect coastal roads and buildings from flooding: a sea wall or a groyne?
What curved concrete wall … · Coastal processes & landfo…
8. What is the return flow of water draining back down the beach toward the sea under gravity: backwash or swash?
What is the return flow of… · Coastal processes & landfo…
9. 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…
10. Which coastal erosion process occurs when waves hurl pebbles and sand against a cliff base like sandpaper: abrasion (corrasion) or attrition?
Which coastal erosion proc… · Coastal processes & landfo…
11. 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…
12. 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…

12 questions · Seed 104729 · 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. As a cliff retreats inland through repeated undercutting and collapse, what gently sloping rocky ledge is left behind at low tide: a wave-cut platform or a lagoon?
Wave-cut platform
A wave-cut platform is the broad rock bench exposed at the base of a retreating cliff.
2. How do marram grass and coastal vegetation help stabilise coastal sand dunes: their deep, matted roots bind loose sand grains together and stems slow the wind so more sand is deposited, or they melt the sand?
Their deep, matted roots bind loose sand together and stems slow the wind so more sand is deposited
Planting marram grass and using boardwalks prevents wind erosion (blowouts) of protective sand dunes.
3. What is the correct sequence of landforms created as waves erode a weakness in a rocky headland: Crack → Cave → Arch → Stack → Stump, or Stack → Arch → Cave → Crack?
Crack → Cave → Arch → Stack → Stump
Waves widen a crack into a sea cave, cut through the headland to form an arch, collapse the arch roof to leave a stack, and erode the stack into a stump.
4. What is the zigzag movement of sand and shingle along a coastline caused by waves approaching the beach at an oblique angle: longshore drift or continental drift?
Longshore drift
Swash moves sediment up the beach at an angle and backwash pulls it straight down, transporting material along the shore.
5. Which coastal erosion process occurs when breaking waves trap and compress air inside cracks in a cliff face, shattering the rock: hydraulic action or solution?
Hydraulic action
The sudden compression and explosive release of air in rock joints wedges fragments loose.
6. 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.
7. What curved concrete wall is built along the back of a shoreline to reflect wave energy and protect coastal roads and buildings from flooding: a sea wall or a groyne?
Sea wall
Curved sea walls deflect breaking waves back toward the sea.
8. What is the return flow of water draining back down the beach toward the sea under gravity: backwash or swash?
Backwash
Backwash flows straight down the beach slope at right angles to the shoreline.
9. 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.
10. Which coastal erosion process occurs when waves hurl pebbles and sand against a cliff base like sandpaper: abrasion (corrasion) or attrition?
Abrasion (corrasion)
Rock fragments carried by waves grind and scrape away the cliff rock.
11. 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.
12. 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.

12 questions · Seed 104729 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 13-15

Coastal processes & landforms

Take your time. Show your thinking.

1. As a cliff retreats inland through repeated undercutting and collapse, what gently sloping rocky ledge is left behind at low tide: a wave-cut platform or a lagoon?
As a cliff retreats inland… · Coastal processes & landfo…
2. How do marram grass and coastal vegetation help stabilise coastal sand dunes: their deep, matted roots bind loose sand grains together and stems slow the wind so more sand is deposited, or they melt the sand?
How do marram grass and co… · Coastal processes & landfo…
3. What is the correct sequence of landforms created as waves erode a weakness in a rocky headland: Crack → Cave → Arch → Stack → Stump, or Stack → Arch → Cave → Crack?
What is the correct sequen… · Coastal processes & landfo…
4. What is the zigzag movement of sand and shingle along a coastline caused by waves approaching the beach at an oblique angle: longshore drift or continental drift?
What is the zigzag movemen… · Coastal processes & landfo…
5. Which coastal erosion process occurs when breaking waves trap and compress air inside cracks in a cliff face, shattering the rock: hydraulic action or solution?
Which coastal erosion proc… · Coastal processes & landfo…
6. 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…
7. What curved concrete wall is built along the back of a shoreline to reflect wave energy and protect coastal roads and buildings from flooding: a sea wall or a groyne?
What curved concrete wall … · Coastal processes & landfo…
8. What is the return flow of water draining back down the beach toward the sea under gravity: backwash or swash?
What is the return flow of… · Coastal processes & landfo…
9. 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…
10. Which coastal erosion process occurs when waves hurl pebbles and sand against a cliff base like sandpaper: abrasion (corrasion) or attrition?
Which coastal erosion proc… · Coastal processes & landfo…
11. 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…
12. 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…

12 questions · Seed 104729 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 13-15

Coastal processes & landforms

Answers and reasoning. Review before teaching.

1. As a cliff retreats inland through repeated undercutting and collapse, what gently sloping rocky ledge is left behind at low tide: a wave-cut platform or a lagoon?
Wave-cut platform
A wave-cut platform is the broad rock bench exposed at the base of a retreating cliff.
2. How do marram grass and coastal vegetation help stabilise coastal sand dunes: their deep, matted roots bind loose sand grains together and stems slow the wind so more sand is deposited, or they melt the sand?
Their deep, matted roots bind loose sand together and stems slow the wind so more sand is deposited
Planting marram grass and using boardwalks prevents wind erosion (blowouts) of protective sand dunes.
3. What is the correct sequence of landforms created as waves erode a weakness in a rocky headland: Crack → Cave → Arch → Stack → Stump, or Stack → Arch → Cave → Crack?
Crack → Cave → Arch → Stack → Stump
Waves widen a crack into a sea cave, cut through the headland to form an arch, collapse the arch roof to leave a stack, and erode the stack into a stump.
4. What is the zigzag movement of sand and shingle along a coastline caused by waves approaching the beach at an oblique angle: longshore drift or continental drift?
Longshore drift
Swash moves sediment up the beach at an angle and backwash pulls it straight down, transporting material along the shore.
5. Which coastal erosion process occurs when breaking waves trap and compress air inside cracks in a cliff face, shattering the rock: hydraulic action or solution?
Hydraulic action
The sudden compression and explosive release of air in rock joints wedges fragments loose.
6. 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.
7. What curved concrete wall is built along the back of a shoreline to reflect wave energy and protect coastal roads and buildings from flooding: a sea wall or a groyne?
Sea wall
Curved sea walls deflect breaking waves back toward the sea.
8. What is the return flow of water draining back down the beach toward the sea under gravity: backwash or swash?
Backwash
Backwash flows straight down the beach slope at right angles to the shoreline.
9. 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.
10. Which coastal erosion process occurs when waves hurl pebbles and sand against a cliff base like sandpaper: abrasion (corrasion) or attrition?
Abrasion (corrasion)
Rock fragments carried by waves grind and scrape away the cliff rock.
11. 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.
12. 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.

12 questions · Seed 104729 · Age guidance, not curriculum certification