Leslie Massey
Greenland and Australia are both large landmasses surrounded by water, but they are classified differently due to their unique characteristics. Australia is a continent and is nearly four times the size of Greenland, which is the world's largest island. If placed side by side on a map, Greenland might appear larger due to map distortions, but in reality, Australia is much larger. Australia has a land area of about 7.7 million square kilometres, while Greenland covers approximately 2.16 million square kilometres.
| Characteristics | Values |
|---|---|
| Area | Greenland: 2,166,086 square miles Australia: 7,692,024 square miles |
| Population | Greenland: 56,081 (2020) Australia: 25,797,434 (2022) |
| Density | Greenland: 0.0 people per square mile Australia: 8.5 people per square mile |
| Location | Greenland: Northernmost country in the world, considered part of North America Australia: Southern hemisphere, between the Indian and Pacific Oceans |
| Status | Greenland: Autonomous territory of Denmark Australia: Sovereign country |
| Capital | Greenland: Nuuk Australia: Canberra |
| Language | Greenland: Greenlandic (official), Danish Australia: English (official), Australian Aboriginal languages |
| Currency | Greenland: Danish krone (DKK) Australia: Australian dollar (AUD) |
| Time Zone | Greenland: UTC-3 to -1 Australia: UTC+8 to +10.5 |
| Climate | Greenland: Arctic to subarctic Australia: Mostly desert or semi-arid, tropical in the north |
| Land Use | Greenland: Uninhabitable (80% ice-capped) Australia: Urban (7.7%), agricultural (6.4%), forest and woodland (19.4%), other (66.5%) |
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What You'll Learn
Greenland is the world's largest island
Despite being the largest island, Greenland is still relatively small compared to continents. Australia, for example, is nearly four times the size of Greenland. Australia is considered a continent due to its size, unique biodiversity, and the fact that it sits on its own tectonic plate. Tectonic plates play a significant role in shaping the planet's landscapes and influencing the formation of landmasses. Greenland, on the other hand, shares the North American tectonic plate with Canada, the United States, and Mexico.
The distinction between Greenland as an island and Australia as a continent is important for geographers and scientists to better organise and understand the world's landmasses. While there is no strict scientific definition of a continent, several criteria are commonly used to distinguish a continent from an island. In addition to geological and biological distinctions, there are anthropological differences. Aboriginal people are unique to Australia, while indigenous Greenlanders belong to the Inuit group found throughout the Arctic regions of Canada, the United States, and Russia.
Another factor to consider is the ice coverage in Greenland. Approximately 80% of Greenland is covered in ice, and if this ice were to melt, it could result in a significant rise in global sea levels of over seven metres. This unique geographical feature further distinguishes Greenland from other landmasses and contributes to its classification as an island rather than a continent.
In summary, Greenland's vast size, geological characteristics, and cultural heritage solidify its status as the world's largest island. While Australia is smaller in comparison to other continents, its substantial area, distinct biodiversity, and tectonic plate classification solidify its status as a continent rather than an island.
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Australia is a continent
Australia is considered a continent in its own right, and for good reason. Firstly, in terms of size, Australia is significantly larger than Greenland. Australia has a total land area of approximately 7.69 million square kilometres, whereas Greenland's land area is around 2.16 million square kilometres. This makes Australia around three and a half times bigger than Greenland.
Now, one might argue that size alone isn't the determining factor for continental status. So, let's consider other aspects. Geographically, Australia is a massive island surrounded by oceans, which is a characteristic typically associated with continents. It is the lowest, flattest, and oldest continental landmass on Earth, with a unique variety of landscapes, from vast deserts to tropical rainforests. The continent has been geographically isolated for a long period, which has resulted in a distinct biodiversity, with many plant and animal species found nowhere else on Earth.
The geological makeup of Australia is also continental. The Australian continent is part of the Indo-Australian Plate, one of the major tectonic plates that form the Earth's crust. This plate includes not only Australia but also extends westward to include the Indian subcontinent and eastward to encompass the island of New Zealand. The plate sits atop a layer of less dense material, known as the asthenosphere, and moves independently, driving geological processes and contributing to the continent's unique geological features.
Finally, from a human perspective, Australia meets the criteria for a continent. It is a discrete, contiguous landmass with clear geographical boundaries, and it functions as a distinct geopolitical entity. Australia has its own government, economy, and cultural identity, with a population of over 25 million people. The continent has a rich Indigenous history, with Aboriginal Australians having inhabited the land for over 65,000 years, and a diverse modern society, making it a significant global presence.
In summary, Australia is indeed a continent, and this classification is supported by a range of geographical, geological, and human factors. While Greenland may be a substantial landmass in its own right, it does not meet the same criteria for continental status, and thus, the comparison between the two territories goes beyond mere size.
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Australia is nearly four times the size of Greenland
On the other hand, Australia is considered the smallest continent. It covers about 7 to 7.7 million square kilometres, showcasing its vastness. Australia sits on its own tectonic plate, known as the Australian Plate, making it a more “self-contained” landmass. This tectonic distinction is a significant factor in the differing classifications of the two regions.
The biodiversity of Australia and Greenland further sets them apart. Australia is renowned for its unique flora and fauna, including kangaroos, koalas, and platypuses, which are endemic to the region. This distinct ecosystem contributes to Australia's continental status. In contrast, Greenland's indigenous Inuit populations and Danish settlers have inhabited the icy landscapes.
The apparent discrepancy in the sizes of Australia and Greenland on maps can be attributed to distortions in the Mercator projection. On such maps, Greenland appears three times larger than Australia, whereas the reverse is true. Despite these visual inconsistencies, the substantial size difference between the two territories remains evident.
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Greenland is part of the North American tectonic plate
Greenland is indeed part of the North American tectonic plate. It shares this tectonic plate with most of the US, Canada, Mexico, Cuba, the Bahamas, the northwestern edge of Siberia, northern Japan, and parts of Iceland and the Azores. Greenland was formed in two rifting stages from the main body of North America. The first stage, during the Cretaceous period, formed Baffin Bay, the northwestern extension of the North Atlantic-Labrador Sea rift system.
The Greenland craton is made up of some of the oldest rocks on Earth, with the Isua greenstone belt in southwestern Greenland containing rocks dated at 3.7–3.8 billion years old. The Precambrian basement of Greenland formed an integral part of the Laurentian Shield, which is at the core of the North American continent.
Despite Greenland's geological connection to North America, its history, politics, society, and culture are more complex. Politically, Greenland is an autonomous territory of Denmark, which means its governance and some cultural ties are rooted in Europe. It has also been influenced by its historical and cultural links to North America through the Greenlandic Inuit and other Indigenous populations who share a lineage with Native Americans.
In recent years, there has been interest from the US in acquiring Greenland, with the Trump administration claiming that it was vital to national security. However, Greenlandic authorities have defended the nation's right to self-determination and are not interested in becoming part of the US.
In terms of size, Greenland is much smaller than Australia, which is nearly four times as large. Australia is considered a continent, while Greenland is considered the world's largest island.
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Australia has a unique biodiversity
Australia is nearly four times as large as Greenland, with a land area of 7 million sq km compared to Greenland's 1 million sq km. Greenland is considered the world's largest island, while Australia is considered a continent.
Australia's Unique Biodiversity
Eight of Australia's 15 declared biodiversity hotspots are in Western Australia, with the South West of the state being internationally recognised as a biodiversity hotspot. Western Australia has one of the highest rates of species discovery in the world, with more being discovered all the time. For example, there are more species of flowering plants in the Fitzgerald River National Park than in the entire United Kingdom.
Australia's biomes, from inland deserts to the rocky walls of marine canyons, each have a unique complement of fauna and flora. Fire has been a powerful evolutionary force for species on land, while Australia's oceans boast one of the most diverse arrays of organisms worldwide.
Modern DNA analysis is revealing new insights into the evolution of Australian biodiversity, with many reptiles that were once thought to be a single species now recognised as comprising several deeply divergent evolutionary lineages. This highlights the unique and diverse nature of Australia's biodiversity, which has evolved mostly in isolation from the rest of the world since the break-up of Gondwana.
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Frequently asked questions
No, Australia is much bigger than Greenland. Australia is a continent surrounded by water and covers an area of around 7 million square kilometres. Greenland is the largest island in the world, covering about 2.16 million square kilometres. Australia is nearly four times the size of Greenland.
Greenland is considered an island because it shares a tectonic plate with North America. It is also smaller than any continent.
Australia is considered a continent because it sits on its own tectonic plate, known as the Australian Plate. It also has a unique ecosystem and biodiversity.
Greenland is the largest island in the world. It is about 2.71 times bigger than the next biggest island, New Guinea.
No, there isn't a strict scientific definition of a continent. However, criteria such as geological, biological, and anthropological distinctions are commonly used to distinguish a continent from an island.
