Seven continents, five oceans, and one supercontinent that broke apart to form them all — the foundation every other geography topic builds on.
This is the second topic in our World Geography strand, following on from Famous World Landmarks & Wonders. Before you can place any landmark, country, or capital on a map, you need the basic frame everything else sits inside: seven continents and five oceans. This article covers each one in detail, how they came to be shaped the way they are, and a couple of common misconceptions worth clearing up early.
A continent is one of Earth's several very large, continuous landmasses. There's no single official scientific rulebook for what counts — the divisions we use today are a mix of geography, geology (plate tectonics), and historical convention. That's why different countries teach slightly different models: some teach seven continents, others teach six (merging Europe and Asia into "Eurasia," or North and South America into "the Americas"), and Olympic tradition even uses a five-ring model. This article uses the seven-continent model, the most widely taught internationally and in Pakistani and Indian curricula.
| Continent | Approx. Area | Approx. Population | Rank by Size |
|---|---|---|---|
| Asia | 44.6 million km² | ~4.7 billion | 1st |
| Africa | 30.3 million km² | ~1.4 billion | 2nd |
| North America | 24.7 million km² | ~600 million | 3rd |
| South America | 17.8 million km² | ~430 million | 4th |
| Antarctica | 14.2 million km² | No permanent residents | 5th |
| Europe | 10.2 million km² | ~745 million | 6th |
| Australia / Oceania | 8.6 million km² | ~45 million | 7th |
Population figures are approximate and change year to year, but the relative order — Asia far ahead, then Africa, then the rest — has stayed consistent for decades.
Asia is the largest and most populous continent, home to roughly 60% of the world's people. It stretches from Turkey's edge in the west to Japan and Indonesia in the east, and includes Pakistan and India. It contains both the world's highest point (Mount Everest, 8,849m, on the Nepal-China border) and one of its lowest land points (the Dead Sea shoreline, about 430m below sea level).
Africa is the second-largest continent and home to 54 recognised countries — more countries than any other continent. It contains the world's longest river, the Nile (about 6,650 km), and its largest hot desert, the Sahara, which covers roughly 9.2 million km² — nearly the size of the entire United States.
North America includes Canada, the United States, Mexico, and the countries of Central America and the Caribbean. It's home to the Great Lakes, the largest group of freshwater lakes on Earth by total area, and the Mississippi–Missouri river system, one of the world's longest.
South America contains the Amazon Rainforest, the largest tropical rainforest on Earth, producing so much oxygen and absorbing so much carbon dioxide it's sometimes called "the lungs of the planet." It's also home to the Andes, the longest continental mountain range in the world, stretching about 7,000 km along the continent's western edge.
Antarctica is Earth's coldest, windiest, and driest continent, with no permanent population — only rotating groups of scientists at research stations. It holds about 70% of the world's fresh water, locked up as ice, and its ice sheet is, in places, over 4.5 km thick.
Europe is physically the western part of the same landmass as Asia — together they're sometimes called Eurasia — but is treated as a separate continent for historical and cultural reasons. Despite being the second-smallest continent, it's home to over 40 countries, many of them quite small in area compared to countries elsewhere.
Australia is the only continent that is also a single country. "Oceania" is the broader region that also includes New Zealand and thousands of Pacific islands grouped into Melanesia, Micronesia, and Polynesia. It's the smallest and least populated continent, and home to unique wildlife found nowhere else, like kangaroos and koalas.
Students often assume every continent boundary looks like a coastline.
The fix: Europe and Asia sit on one continuous landmass with no ocean between them. The boundary is conventional, running roughly along the Ural Mountains, the Ural River, and the Caucasus region — a line agreed on by historians and geographers rather than one drawn by nature the way the Atlantic Ocean separates the Americas from Europe and Africa.
Tap any continent below for quick facts you can use to check your memory.
Tap a continent above to see its key facts.
An ocean is one of Earth's major bodies of salt water. All the world's oceans are actually connected into one continuous body of water — the divisions between them are drawn using continents, underwater ridges, and agreed-upon boundary lines, not physical walls. For most of the 20th century, geographers taught four oceans. In June 2021, the Southern Ocean (surrounding Antarctica) was formally recognised as the fifth by National Geographic, matching what many oceanographers had already been using for years.
| Ocean | Approx. Area | Deepest Point |
|---|---|---|
| Pacific | 165.2 million km² | Challenger Deep, ~10,935 m |
| Atlantic | 106.5 million km² | Puerto Rico Trench, ~8,376 m |
| Indian | 70.6 million km² | Java Trench, ~7,290 m |
| Southern | 20.3 million km² | South Sandwich Trench, ~7,236 m |
| Arctic | 14.1 million km² | Molloy Deep, ~5,550 m |
The Pacific alone is larger than all of Earth's landmasses combined.
The Pacific is by far the largest and deepest ocean, covering about a third of the Earth's entire surface. It contains the Mariana Trench, home to the Challenger Deep — at roughly 10,935 metres below the surface, the deepest known point in any ocean. If Mount Everest were dropped into it, its peak would still sit over 2 km underwater.
The Atlantic Ocean separates the Americas from Europe and Africa and is the world's saltiest major ocean. The Indian Ocean, bordered by Africa, Asia, and Australia, is the warmest ocean overall and historically the centre of ancient maritime trade routes connecting the Middle East, South Asia, and East Africa. The Southern Ocean encircles Antarctica and drives the powerful Antarctic Circumpolar Current. The Arctic Ocean is the smallest and shallowest, largely covered in sea ice for much of the year, though that ice cover has been shrinking due to climate change.
Many textbooks (and adults!) still learned only four oceans in school.
The fix: The Southern Ocean has existed as a distinct body of water around Antarctica all along, but it was only formally recognised as Earth's fifth ocean by National Geographic in June 2021. Many oceanographers had already treated it as separate for decades because of its unique current system, so if you learned "four oceans," that's not wrong for its time — geography knowledge updates as understanding improves.
Around 335 million years ago, almost all of Earth's land was joined into a single supercontinent called Pangaea. About 175 million years ago, Pangaea began splitting apart due to plate tectonics — the slow movement of the huge rocky plates that make up Earth's crust, drifting at roughly the speed your fingernails grow. Over tens of millions of years, those pieces drifted into the continents we recognise today, and they're still moving — North America and Europe drift apart by about 2.5 cm every year.
The idea was proposed as "continental drift" by German scientist Alfred Wegener in 1912. He was widely dismissed at the time because he couldn't explain how continents moved — the mechanism (plate tectonics) wasn't confirmed until decades later, in the 1960s.
Look at a world map: the eastern coastline of South America and the western coastline of Africa fit together almost like puzzle pieces. That's not a coincidence — it's a visible leftover of the two continents once being joined as part of Pangaea.
Because tectonic plates are still moving, in roughly 250 million years scientists predict the continents will collide again into a new supercontinent — some researchers have already nicknamed it "Pangaea Proxima."
Tap the correct answer for each question. Your score is tracked as you go, and your best score is saved on this device.
Continents and oceans are the skeleton every other geography fact hangs on — you can't learn countries, capitals, climates, or landmarks without first knowing where the major landmasses and bodies of water actually are. This topic also connects directly to science (plate tectonics, climate systems) and history (how oceans shaped trade, exploration, and the spread of cultures) — making it one of the most cross-curricular topics in this entire strand.
15 questions. Select an answer for each, then submit to see your score instantly.