Damon Mcknight
Australia is a country of diverse landscapes, from its stunning coastal regions to its arid deserts and lush rainforests. The country is surrounded by three oceans and four seas, and its landmass covers 7.692 million square kilometres. Australia is the smallest of Earth's continents and the lowest in terms of elevation. The country is known for its unique and distinctive landforms, shaped by various geological processes over millions of years. Australia's physical features include mountains, islands, rivers, reefs, rock formations, and more. These natural wonders attract people from all over the world and support a wide range of ecosystems, making Australia a popular destination for nature enthusiasts and adventurers alike.
| Characteristics | Values |
|---|---|
| Population | 27.2 million (as of 30 June 2024) |
| Population Density | 3.5/km2 (9.1/sq mi)2 (as of 2024) |
| Landmass | 7.692 million square kilometers (approximately) |
| Terrain | Mostly low plateau with deserts |
| Elevation | Average of 330 meters (1,803 feet) above sea level |
| Highest Peak | Mount Kosciuszko (2228 meters) |
| Major Rivers | Murray River (2,375 kilometers) and Darling River |
| Great Artesian Basin | World's largest and deepest artesian basin |
| Climate | Varied, including arid and tropical regions |
| Coastal Plains | Narrow strip of flat land with high rainfall along the eastern continental coastline |
| Mountain Ranges | Great Dividing Range, Snowy Mountains, Blue Mountains, Grampian Mountains |
| Islands | Tasmania, Fraser Island, Melville Island, and thousands of smaller islands |
| Natural Wonders | Uluru, Great Barrier Reef, Great Australian Bight, Bungle Bungle Range |
| UNESCO World Heritage Sites | Shark Bay, Kakadu National Park, Blue Mountains, Fraser Island |
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What You'll Learn
The Great Dividing Range
The width of the Range varies from 160 kilometres (100 miles) to over 300 kilometres (190 miles), and its elevation ranges from 300 to 1,600 metres (980 to 5,250 feet). The Great Dividing Range is geologically and topographically complex, with a combination of limestone, sandstone, quartzite, schists, and dolomite formations created by faulting and folding processes.
The Range has a significant impact on Australia's climate, population distribution, settlement patterns, economics, and agriculture. The eastern side of the Range experiences a Föhn effect, a dry wind originating from the Great Dividing Range that increases fire danger during warm months. The Range also shields southeastern Australia from cold fronts during the cool season.
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The Great Barrier Reef
Today, the Great Barrier Reef is a popular tourist destination, attracting visitors with its natural beauty and a range of experiences such as snorkelling, scuba diving, helicopter tours, glass-bottomed boat viewing, and whale watching. Tourism generates over AUD$3 billion per year for the region.
However, the reef faces significant environmental challenges. It has been impacted by human activities such as fishing and tourism, as well as the runoff of human-made pollutants and climate change. Coral bleaching events, caused by warming ocean temperatures, have resulted in the loss of a significant portion of the reef's coral cover. Conservation efforts, such as the Great Barrier Reef Marine Park Act 1975, aim to protect and preserve this unique natural wonder.
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Uluru
The Uluru-Kata Tjuta National Park, in which the rock formation is located, offers a range of accommodation options and provides access to other Australian outback destinations. Visitors can learn about the bush, food, local flora and fauna, and Aboriginal Dreamtime stories of the area through walking tours led by the local Aṉangu people.
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The Great Australian Bight
The Bight is characterised by cliff faces, surfing beaches, and rock platforms, with the coastline featuring the longest line of sea cliffs in the world. The cliffs stand at 60 to 120 metres (200 to 400 feet) high. The area is known for its rough seas and storms due to its exposure to winter westerly winds. The coastline is formed from aeolianite limestone, which has been shaped by waves and currents into beaches and dunes. The southern Eyre Peninsula, an outcrop of the granitic Gawler craton, is another distinctive feature of the region.
The Bight is bordered by the Nullarbor Plain, a former seabed that was uplifted during the Miocene. The plain consists of limestone and has an arid or semi-arid climate with minimal rainfall, high temperatures, and high evaporation rates. The area around Cape Pasley showcases ancient crystalline rocks of the Yilgarn craton.
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The Blue Mountains
The name "Blue Mountains" originates from the blue tinge that the range takes on when viewed from a distance. This phenomenon is caused by Mie scattering, which occurs when incoming light with shorter wavelengths is scattered by particles in the atmosphere, imparting a blue-greyish hue to distant objects. The eucalyptus trees in the area emit volatile terpenoids, contributing to the blue haze for which the mountains were named.
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Frequently asked questions
Australia has many popular physical features, one of the most famous being Uluru, formerly known as Ayers Rock. Uluru is a massive sandstone rock formation located in the Northern Territory. It is sacred to the indigenous Pitjantjatjara Anangu people and is known for its ancient cave paintings.
The Great Barrier Reef, the largest coral reef system in the world, is also one of Australia's most popular physical features. The reef stretches for over 2,300 kilometres along the country's northeastern coast and is known for its rich biodiversity.
The Great Dividing Range is a significant geographical feature and the most iconic mountain range in Australia. It includes mountains such as the Snowy Mountains and Australia's tallest mountain, Mount Kosciuszko, which stands at 2,228 metres above sea level.
Australia is home to thousands of islands, with Tasmania being the largest. Fraser Island, off the coast of Queensland, is another notable island and is known for its diverse habitats, including mangroves and sand dunes.
Australia has a diverse range of ecosystems, including wetlands, billabongs, swamps, and lagoons, which support a variety of birdlife. The arid and desert regions of Australia also host unique flora and fauna, such as spinifex grass and the thorny devil lizard.
