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In geology, a continent is defined by continental crust, which is a platform of metamorphic and igneous rock, largely of granitic composition. Continental crust is less dense and much thicker than oceanic crust, which causes it to "float" higher than oceanic crust on the dense underlying mantle.
Population ranking of the world's continents and continental subregions. This is a list of continents and continental subregions by population. World population by continent, 2021. Asia (59.4%) Africa (17.6%) Europe (9.4%) North America (7.5%) South America (5.5%) Oceania (0.6%)
The United Nations geoscheme is a system which divides 248 countries and territories in the world into six continental regions, 22 geographical subregions, and two intermediary regions. [1] It was devised by the United Nations Statistics Division (UNSD) based on the M49 coding classification. [2] The creators note that "the assignment of ...
Earth is rounded into an ellipsoid with a circumference of about 40,000 km. It is the densest planet in the Solar System. Of the four rocky planets, it is the largest and most massive. Earth is about eight light-minutes away from the Sun and orbits it, taking a year (about 365.25 days) to complete one revolution.
Land, also known as dry land, ground, or earth, is the solid terrestrial surface of Earth not submerged by the ocean or another body of water. It makes up 29.2% of Earth's surface and includes all continents and islands. Earth's land surface is almost entirely covered by regolith, a layer of rock, soil, and minerals that forms the outer part of ...
The continent of Australia, sometimes known in technical contexts by the names Sahul (/ səˈhuːl /), Australia-New Guinea, Australinea, or Meganesia[1][2][3] to distinguish it from the country of Australia, is located within the Southern and Eastern hemispheres. [4] The continent includes mainland Australia, Tasmania, the island of New Guinea ...
Landmass. A landmass, or land mass, is a large region or area of land that is in one piece and not broken up by oceans. [1][2] The term is often used to refer to lands surrounded by an ocean or sea, such as a continent or a large island. [3][4] In the field of geology, a landmass is a defined section of continental crust extending above sea ...
The continental boundaries are considered to be within the very narrow land connections joining the continents. The remaining boundaries concern the association of islands and archipelagos with specific continents, notably: the delineation between Africa, Asia, and Europe in the Mediterranean Sea; the delineation between Asia and Europe in the ...