Geography · Unit 9

Coasts and Oceans

Where land meets sea

The coast is the most rapidly changing landscape most people ever see, and the one where the argument between natural processes and human intention is sharpest.

The unit covers wave erosion and the landforms it cuts, deposition and the landforms it builds, ocean currents and their effect on climate, and coastal management - largely the question of whether to fight the sea, move out of its way, or pay for one somewhere and the other elsewhere.

This unit breaks down into 20 short steps and 120 questions, starting at difficulty 1 and building to 3. Below you can see exactly what it covers, how the path is structured, and worked examples with explanations.

Steps: 20
Questions: 120
Difficulty: 1-3

What this unit covers

Coastal Processes
Coastal Management
Deposition Landforms
Oceans and Currents
Erosion Landforms

Where this fits

Shares its processes with Rivers and Water. Ocean currents connect to Weather and Climate.

Where people slip

Defending one stretch of coast usually starves the next one of sediment. Coastal management is a trade-off between places, not a solution.

How the unit is structured

Coasts and Oceans runs as 20 short steps that unlock in order. 15 are practice rounds and 5 are challenge rounds that pull together everything before them. Questions start at difficulty 1 and climb to 3 as you progress.

Step 1 · easierStep 20 · harder

Challenge rounds

Example questions

30 real questions from this unit, with the answer and the reason behind it, grouped by what they practise. There are 120 in the unit altogether.

Coastal Management

Multiple choiceLevel 1
1. Many people live and work at the coast because of jobs such as...
- fishing, ports and tourism
- mining diamonds
- growing wheat far inland
- skiing on glaciers
Coasts offer work in fishing, in ports that handle trade, and in tourism at seaside resorts.
Odd one outLevel 1
2. Which of these is NOT a way of defending the coast?
- Waterfallcorrect
- Sea wall
- Groyne
- Rock armour
Sea walls, groynes and rock armour all defend the coast, but a waterfall is a river feature, not a coastal defence.
Choose all that applyLevel 2
3. Which of these are ways the coast is useful to people? (Choose all that apply.)
- Ports for ships and tradecorrect
- Fishing for foodcorrect
- Tourism and holidayscorrect
- Digging deep coal mines
Coasts are used for ports and trade, fishing for food, and tourism, but not for digging deep coal mines.
Fill the blankLevel 3
4. Groynes built at Mappleton protected the town but starved the coast further south of sand, speeding up erosion there. This knock-on effect is called ____ groyne syndrome.
- terminalcorrect
- central
- reverse
- frozen
Trapping sediment updrift leaves the coast downdrift short of material, a problem known as terminal groyne syndrome.
Guess the numberLevel 3
5. Roughly what percentage of the Netherlands lies below sea level?
Answer: 26 %
About a quarter (roughly 26%) of the Netherlands lies below sea level, protected by dykes and dunes.
Match the pairsLevel 3
6. Match each Shoreline Management Plan policy to what it means.
Answer: Hold the line = maintain the existing defences where they are; Advance the line = build new defences further out to sea; Managed realignment = let the shoreline move back in a controlled way; No active intervention = do nothing and let nature take its course
Shoreline Management Plans choose between holding, advancing, realigning or not defending each stretch of coast.

Coastal Processes

Build the sentenceLevel 1
7. Build the sentence about how sand travels along a beach.
Answer: longshore drift moves material along the coast
Longshore drift moves sand and shingle sideways along the coast in the direction the waves are pushing.
Fact or fibLevel 2
8. Gentle constructive waves are the main cause of cliff erosion.
Answer: False
It is the powerful destructive waves, not gentle constructive ones, that wear away cliffs.
Fill the blankLevel 2
9. After a wave breaks, the water that rushes up the beach is called the ____.
- swashcorrect
- backwash
- tide
- current
The swash is the water that surges up the beach after a wave breaks.
Multiple choiceLevel 2
10. Longshore drift moves material along the coast because the waves approach the beach...
- at an anglecorrect
- straight on
- from underneath
- only at night
Waves that hit the beach at an angle push material along the shore in a zigzag path.
Guess the numberLevel 3
11. For coastal management, the coastline of England and Wales is divided into how many major sediment cells?
Answer: 11 cells
England and Wales are split into 11 large sediment cells, each managed as a self-contained unit.
Match the pairsLevel 3
12. Match each coastal erosion process to its description.
Answer: Hydraulic action = Compressed air in cracks shatters the rock; Abrasion = Sand and pebbles are hurled against the cliff; Attrition = Rocks knock together and become smaller and rounder; Solution = Weak acids dissolve chalk and limestone
Hydraulic action uses compressed air, abrasion uses hurled sediment, attrition wears the sediment itself down, and solution dissolves soluble rock.

Deposition Landforms

Fact or fibLevel 1
13. Constructive waves build beaches up by leaving material behind.
Answer: True
Constructive waves have a strong swash that carries sand and shingle onto the beach, building it up.
Fill the blankLevel 1
14. Hills of wind-blown sand at the back of a beach are called sand ____.
- dunescorrect
- walls
- bars
- waves
Sand dunes form when the wind blows dry sand up the beach and it piles up, often held together by grasses.
Multiple choiceLevel 1
15. A beach is mostly made of...
- sand and pebbles dropped by the seacorrect
- solid cliff rock
- only sea water
- ice
A beach is built from sand and pebbles that the sea drops along the shore.
Build the sentenceLevel 2
16. Build the sentence about when the sea drops its load.
Answer: waves drop sand when they lose energy
Deposition happens when waves slow down and lose energy, so they can no longer carry their sand.
Match the pairsLevel 2
17. Match each deposition landform to its description.
Answer: Beach = Sand and pebbles along the shore; Spit = Sand ridge growing out across a bay; Sand dune = Hill of wind-blown sand; Bar = Sand ridge joining two headlands
Beaches, spits, sand dunes and bars are all built up from material the sea and wind drop along the coast.
Choose all that applyLevel 3
18. Which TWO features are typical of a sheltered, low-energy estuary? (Choose all that apply.)
- Mudflatscorrect
- Salt marshescorrect
- Tall sea stacks
- Wave-cut platforms
Calm estuaries favour deposition, forming mudflats and salt marshes, not the erosion landforms of high-energy coasts.

Erosion Landforms

Fill the blankLevel 1
19. When a stack is slowly worn down to a low lump of rock, it is called a ____.
- stumpcorrect
- stack
- spit
- cliff
A stump is the worn-down remains of a collapsed stack, often only visible at low tide.
Picture questionLevel 1
20. 🪨 The picture shows a tall pillar of rock left standing alone in the sea. What is it called?
- Stackcorrect
- Spit
- Sand dune
- Bay
A stack is a column of rock left standing in the sea after an arch collapses.
Multiple choiceLevel 2
21. As waves wear away the bottom of a cliff, the cliff retreats and leaves behind a flat rocky area called a...
- wave-cut platformcorrect
- beach
- spit
- delta
A wave-cut platform is the flat rocky surface left behind at the base of a cliff as it is eroded backwards.
Odd one outLevel 2
22. Which of these is NOT a landform created by coastal erosion?
- Spitcorrect
- Cave
- Arch
- Stack
Caves, arches and stacks are erosional; a spit is a depositional landform built by longshore drift.
Put in orderLevel 2
23. Put the stages of coastal erosion in order as a headland is worn away.
Answer: Cave -> Arch -> Stack -> Stump
Waves widen a cave into an arch, the arch collapses to leave a stack, and the stack is worn down to a stump.
Fact or fibLevel 3
24. Fact or fib: a fjord is a drowned glacial valley, while a ria is a drowned river valley.
Answer: True
Both are submergent landforms, but fjords are flooded glacial (U-shaped) valleys and rias are flooded river (V-shaped) valleys.

Oceans and Currents

Fact or fibLevel 1
25. The Gulf Stream is a warm ocean current.
Answer: True
The Gulf Stream carries warm water from the tropical Atlantic north-eastwards towards Europe.
Guess the numberLevel 1
26. How many oceans does the Earth have?
Answer: 5 oceans
The Earth has five oceans: the Pacific, Atlantic, Indian, Southern and Arctic.
Multiple choiceLevel 2
27. The Gulf Stream brings warm water towards north-west Europe, which helps to keep its winters...
- milder than expectedcorrect
- far colder than the Arctic
- completely dry
- dark for months
The warm water of the Gulf Stream makes north-west Europe milder in winter than other places at the same latitude.
Choose all that applyLevel 3
28. Which TWO of these directly cause global sea levels to rise?
- Thermal expansion of warming seawatercorrect
- Melting of land-based glaciers and ice sheetscorrect
- Melting of floating sea ice
- Building more sea walls
Sea level rises from the thermal expansion of warming water and the melting of land-based ice; melting floating sea ice does not add to the volume.
Fill the blankLevel 3
29. The slow, deep, worldwide movement of seawater driven by differences in temperature and salinity is nicknamed the global ocean ____.
- conveyorcorrect
- whirlpool
- tide
- swell
Thermohaline circulation, the 'global ocean conveyor', moves water between the surface and the deep sea around the planet.
Match the pairsLevel 3
30. Match each type of sea-level change to its cause.
Answer: Eustatic rise = melting ice sheets add water to the oceans worldwide; Eustatic fall = water is locked into growing ice, lowering the sea globally; Isostatic rebound = land rises locally after the weight of ice is removed; Isostatic sinking = land is pushed down by the weight of a growing ice sheet
Eustatic changes are global, caused by the volume of water; isostatic changes are local, caused by the land rising or sinking.

Where these questions come from. Each unit starts as a plan of the concepts it should cover and the difficulty it should span. Questions are written against that plan with AI assistance, then checked by a validator that rejects anything without a single defensible answer, an explanation, or plausible wrong options. How we write questions sets out the whole process, and corrections are fixed in the bank and reach the site and the app the same day.

How you practise

This unit mixes 17 different question formats, so you are recalling and applying rather than recognising the same layout every time.

Build the sentence
Choose all that apply
Fact or fib
Fill the blank
Guess the number
Listen and choose
Match the pairs
Multiple choice
Odd one out
Picture question
Put in order
Sequence recall
Sort into groups
Spell it
Tap the pairs
True or false
Type the answer

Practise Coasts and Oceans

120 questions across 20 steps. Start with step one and crawl at your own pace.

Play this unit

Read about Coasts and Oceans

Explainers from our blog on what this unit covers. Each one ends with real questions from the bank.

More units in Geography

See all 18 units in Geography →