The world map depicts
Eurasia, a single landmass and largest continent on the planet, covering about 52 million km². The continent 'sits' on the Eurasian tectonic plate.
Eurasia is subdivided by convention into Asia and Europe, separated from each other by the Caspian Sea, the Ural River, and the Urals (the Ural Mountains).
The Ural mountain range runs from the coast of the Arctic Ocean southwards through western
Russia.
Second largest landmass is the continent of
Africa with an
area of 30.2 million km². Africa as we know it, is actually the visible part of the African tectonic plate,
the rest of the plate is under water of various oceans and seas around its landmass. The continent is subdivided by convention into
North(ern) Africa, West(ern) Africa, East(ern) Africa, Central Africa, and Southern Africa.
The continent is shared by 54 countries.
The
Americas consisting of North and South America and the islands of the Caribbean. North and South America are geologically separate continental masses.
North America is Earth's third largest landmass with an area of 24.2 million km², separated geographically from mainland Asia by the 85 km wide Bering Strait, but
plate tectonically, a portion of eastern Russia (eastern Siberia) is actually part of the North American
plate.
Mainland North America is home to four countries:
Canada, the
United States,
Mexico, and also
Greenland belongs geographically to North America.
North America is connected to South America by the
Isthmus of Panama, a landbridge between the Caribbean Sea and the Pacific Ocean.
South America is located almost entirely in the Southern Hemisphere, it is bordered in west by the Humboldt (Peru) Current of the Pacific Ocean
and in east by the Brazil Current of the South Atlantic Ocean. With an area of 17.8 million km² it is number four in the short list of the largest continents.
The continent is situated on the South American Plate, which in north meets the Caribbean Plate in the Caribbean Sea, in west the Nazca plate in the
South Pacific Ocean, and in east it adjoins the African plate.
Australia is both, a country and a continent, it is the smallest in our hitlist of the largest continents, Australia's landmass measures 7.6 million km²,
therefore it is still smaller than the area of Europe with about 10.2 million km². Australia travels together with the island of New Guinea on the Australia tectonic plate.
Antarctica,
has a land area of 14 million km², making it the world's fifth-largest continent in area. Somewhere in the middle of this vast, cold and hostile continent is the South Pole,
the southernmost point on the surface of the Earth and the hub, one of the two endpoints of Earth's rotation axis. Antarctica has its own tectonic plate, named the Antarctic plate.