The Debate on Continents: How Many Are There Really?

There are seven continents on Earth: Africa, Antarctica, Asia, Europe, North America, Oceania, and South America. However, experts disagree on how to categorize these landmasses. In the U.S., the seven-continent model is standard, while Europe often teaches a six-continent model, merging North and South America into one. Some definitions combine Europe and Asia into Eurasia. Another view groups Africa, Europe, and Asia as one continent called Afro-Eurasia, since these areas can be traversed by land, except for the Suez Canal.

A continent is typically seen as a large landmass, linked to tectonic plates that float on Earth’s crust. A recent study published in Gondwana Research controversially argued that North America and Europe are one continent, totaling six. This claim is based on geological evidence suggesting that Iceland and the Greenland-Iceland-Faroe Ridge connect both tectonic plates.

Defining continents can be tricky. Around 300 to 200 million years ago, the Earth was one supercontinent called Pangea, which eventually split into separate continents. Plate tectonics and the history of landmasses show that continents can shift and change over time.

Scientists also found Zealandia, a submerged microcontinent, which is believed to have broken away from Antarctica and Australia millions of years ago. While land and tectonic plates are vital to defining continents, societal views also matter. The perception of Europe and Asia as distinct continents reflects a primarily Western worldview. The notion of Eurasia helps address this bias and highlights interconnected landmasses.

Even scientific definitions have some subjectivity. There is no official authority that determines what constitutes a continent. This complexity showcases how cultural factors shape our understanding and perception of these landforms.