You haven't completed the exercise.
The biggest, the longest, the deepest
How much do you know about the Earth? Read on ... the answer is not always clear.
Continents
The largest continent in the world is Asia. It is 44.8 million square kilometres. Some people believe that the smallest continent is Australia at 7.7 million square kilometres. It is part of the continent of Oceania. These sources say that Oceania, including Australia, is the smallest continent. It contains thousands of islands, but the total area is only 8 million square kilometres.
Rivers
Some websites say that the longest river in the world is the Nile, with a length of around 6,650 kilometres. Other people measure the Amazon at 6,992 kilometres and the Nile at 6,853. It sends 219,000 cubic metres of water into the Atlantic Ocean every second. The Nile is much smaller, at 5,100 cubic metres per second.
Lakes
The largest lake in the world is not called a lake. It is the Caspian Sea in Asia and Europe. It has an area of 371,000 square kilometres. Scientists say that Lake Baikal contains 20% of the world’s unfrozen fresh water.
Oceans
The Pacific Ocean is the biggest ocean in the world. It covers almost a third of the Earth’s surface. It stretches from the Arctic in the north to Antarctica in the south. It is divided into the North Pacific and the South Pacific. Researchers say that the deepest part of the Pacific is south of Japan. The smallest ocean is the Arctic Ocean. At 13,223,800 square kilometres, it is ten times smaller than the Pacific.