Lexi Webster
Australia and Greenland are often compared when discussing the largest islands in the world. Australia is a continent and, at 7 million km², is significantly larger than Greenland, which measures 2,165,230 km² or 1 million km². However, there is debate around whether Australia can be considered an island due to its size and its status as a continent. Greenland, on the other hand, is widely recognised as an island and is considered the largest in the world.
| Characteristics | Values |
|---|---|
| Area | Australia is larger with an area of approximately 7.7 million square kilometers, compared to Greenland's area of about 2.2 million square kilometers. |
| Population | As of 2023, Australia has a population of over 26 million people, while Greenland's population is estimated to be around 56,000 people. |
| Continent vs. Island | Australia is considered a continent, while Greenland is classified as the world's largest island. |
| Geography | Australia is a diverse landscape, ranging from deserts to tropical rainforests, while Greenland is mostly covered in ice and has a frozen tundra climate. |
| Location | Australia is located in the Southern Hemisphere, while Greenland is in the Northern Hemisphere, east of the Arctic Ocean. |
| Independence | Australia is a sovereign country, while Greenland is a self-governing territory that remains part of the Kingdom of Denmark. |
| Economy | Australia has a strong, diverse economy with a focus on services, agriculture, and natural resources. Greenland's economy relies heavily on fishing, tourism, and natural resources such as minerals and gemstones. |
| Culture | Both Australia and Greenland have unique cultures, but Australia is known for its diverse, multicultural society, while Greenland has a strong Inuit influence and a rich history of traditions. |
| Tourism | Australia is a popular tourist destination known for its natural wonders, beaches, and urban centers, while Greenland attracts tourists with its unique Arctic experiences and natural phenomena like the Northern Lights. |
| Wildlife | Australia is home to unique wildlife, including kangaroos, koalas, and diverse marine life, while Greenland's wildlife includes Arctic foxes, reindeer, and a variety of marine mammals such as whales and seals. |
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What You'll Learn
Greenland is the world's largest island
Greenland is considered an island because it sits on the North American tectonic plate and is not geologically separate from Canada, the United States, and Mexico. In contrast, Australia, which is often considered the largest island, is a continent because it rests on its own tectonic plate, the Australian Plate, and has unique flora and fauna not found elsewhere.
Greenland has a rich cultural history, with indigenous Greenlanders belonging to the Inuit people, found throughout the Arctic regions of Canada, the United States, and Russia. The country is politically and culturally associated with Europe, particularly Norway, Denmark, and Iceland, which have had colonial ties to Greenland for over a millennium. In 2008, Greenlanders voted in favour of greater autonomy from Denmark, with 75% of votes cast in support.
While Greenland is the largest island in the world, it is not a continent. A continent is typically defined as a landmass that is entirely surrounded by water and larger than an island. While there is no strict scientific definition of a continent, several commonly accepted criteria distinguish a continent from an island, including tectonic independence, unique flora and fauna, cultural uniqueness, and local belief in continental status. Greenland does not meet all of these criteria, and its inhabitants largely identify as islanders rather than continental dwellers.
In summary, Greenland is the world's largest island, with a size of over 2.16 million square kilometres and a unique cultural and geological history. However, it is not considered a continent due to its connection to the North American tectonic plate and other factors.
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Australia is a continent, not an island
Australia rests on its own tectonic plate, the Australian Plate, and has a unique flora and fauna, with native animals like kangaroos, wombats, and Tasmanian devils found nowhere else in the world. It also has a distinct Aboriginal culture that sets it apart from other regions.
In contrast, Greenland sits on the North American tectonic plate and shares it with North America. While Greenland does have its own unique culture, it is considered part of the larger North American Arctic culture. Greenlanders themselves also identify as islanders rather than continental dwellers.
The size of a landmass can also be a factor in distinguishing a continent from an island. Australia is nearly four times larger than Greenland, making it too large to be considered just an island.
Therefore, based on these criteria, Australia is classified as a continent, while Greenland is considered the world's largest island.
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Australia is nearly four times the size of Greenland
There is no strict scientific definition of a continent, but there are several commonly used criteria to distinguish a continent from an island. These include tectonic independence from other continents, unique flora and fauna, cultural uniqueness, and local belief in continental status.
Australia rests on its own tectonic plate, the Australian Plate, and has a large percentage of unique plant and animal species found nowhere else in the world. Aboriginal people are limited to Australia, contributing to its cultural uniqueness.
On the other hand, Greenland shares a tectonic plate with North America and is not geologically separate from Canada, the United States, and Mexico. Greenland does have its own culture, but it is considered part of the larger North American Arctic culture. Greenlanders themselves consider their land an island rather than a continent.
In terms of size, Australia is significantly larger than Greenland. Australia has a land area of approximately 7 million square kilometers, while Greenland covers just over 2 million square kilometers. This makes Australia nearly four times the size of Greenland, reinforcing its classification as a continent rather than an island.
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Greenland is part of the North American tectonic plate
Greenland is the world's largest island, measuring 1 million square kilometres. Australia, by comparison, is 7 million square kilometres and is considered a continent.
Greenland is a part of the North American tectonic plate. It was formed in two rifting stages from the main body of North America. The first stage, during the Cretaceous period, formed Baffin Bay, which is the northwestern extension of the North Atlantic-Labrador Sea rift system. This system started forming 140 million years ago. The second stage of Greenland's formation occurred 69 million years ago during the Maastrichtian age when the Labrador Sea began to open. Seafloor spreading appears to have ceased by the Oligocene epoch, 30-35 million years ago.
Since the closure of the North Atlantic-Labrador Sea rift, Greenland has moved in conjunction with the North American plate. This has led to questions about whether the Greenland plate should be considered a separate plate. The area between Greenland and Baffin Island is seismically active, with many earthquakes occurring in this region.
The Greenland plate is a tectonic microplate bounded to the west by the Nares Strait and to the southwest by the Ungava transform underlying Davis Strait. 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.
While Greenland is considered a part of the North American tectonic plate, its identity is complex and shaped by a blend of internal and external influences. Politically, it is an autonomous territory of Denmark, with modern governance and cultural ties rooted in Europe. However, it also has historical connections to Indigenous Arctic peoples and is considered geologically North American.
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There are no official conditions for what defines a continent
Australia, at 7,617,930 square kilometres (2,941,300 sq mi), is deemed the smallest continent. However, if we consider Australia an island, then Greenland, with a surface area of 2,166,086 square kilometres (836,330 sq mi), is the largest island in the world.
In modern schemes with five or more recognised continents, at least one pair of continents is joined by land in some way. The criterion of "large" leads to arbitrary classification. For example, Greenland is only considered the world's largest island, but Australia, which is smaller, is deemed a continent.
The number of continents varies, with up to seven or as few as four geographical regions commonly regarded as continents. Most English-speaking countries recognise seven regions as continents: Asia, Africa, North America, South America, Antarctica, Europe, and Australia (sometimes called Oceania or Australasia).
Geologically, a continent is defined as "one of Earth's major landmasses, including both dry land and continental shelves". The geological definition of a continent has four criteria: high elevation relative to the ocean floor; a wide range of igneous, metamorphic and sedimentary rocks rich in silica; a crust thicker than that of oceanic crust; and a lower density than that of the underlying mantle.
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Frequently asked questions
Greenland is the largest island in the world, with an area of over 2.16 million square kilometers. Australia, which is nearly four times larger than Greenland, is considered a continent.
Greenland is considered an island because it is surrounded by water, sitting between the Arctic Ocean and the North Atlantic Ocean. While there are no official conditions for a landmass to be considered a continent, several factors are commonly used to distinguish a continent from an island, including tectonic independence from other continents, unique flora and fauna, cultural uniqueness, and local belief in continental status. Greenland shares a tectonic plate with North America and is considered part of the larger North American arctic culture, so it does not meet some of the criteria for being classified as a continent.
Australia is considered a continent because it is a large landmass that is surrounded by water and has its own unique flora and fauna, as well as a distinct culture. Australia also rests on its own tectonic plate, the Australian Plate, which further distinguishes it from nearby landmasses. While Australia has historically been referred to as an "island country" due to its lack of land borders, it is now widely recognized as a continent.
