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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 10-12

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. 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…
3. 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…
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. 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…
6. 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…
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. 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…
9. 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…
10. What is the forward rush of foaming water up a beach after a wave breaks: swash or backwash?
What is the forward rush o… · Coastal processes & landfo…
11. 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…
12. 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…

12 questions · Seed 42 · Age guidance, not curriculum certification

View the answer key

Worksheet StudioAnswer key · Ages 10-12

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. 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.
3. 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.
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. 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.
6. 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.
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. 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.
9. 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.
10. What is the forward rush of foaming water up a beach after a wave breaks: swash or backwash?
Swash
Swash carries sand and shingle up the beach slope in the direction of the breaking wave.
11. 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.
12. 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.

12 questions · Seed 42 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 10-12

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. 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…
3. 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…
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. 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…
6. 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…
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. 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…
9. 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…
10. What is the forward rush of foaming water up a beach after a wave breaks: swash or backwash?
What is the forward rush o… · Coastal processes & landfo…
11. 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…
12. 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…

12 questions · Seed 42 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 10-12

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. 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.
3. 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.
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. 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.
6. 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.
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. 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.
9. 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.
10. What is the forward rush of foaming water up a beach after a wave breaks: swash or backwash?
Swash
Swash carries sand and shingle up the beach slope in the direction of the breaking wave.
11. 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.
12. 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.

12 questions · Seed 42 · Age guidance, not curriculum certification