1. The largest continent on the Earth is Asia. It is located in the Northern Hemisphere.
2. Mount Everest is the highest mountain peak in the world. It is situated in Nepal at a height of 8,848 metres from the sea level.
3. Australia is the smallest continent in the world; it is located in the Southern Hemisphere.
4. The Andes in South America is the longest unbroken chain of mountains, with Mount Aconcagua as its highest peak.
5. Oceans are deep and vast bodies of water. The average depth of oceans is 3,800 metres.
6. The Mariana Trench is the deepest trench at a depth of 11,022 metres; it is located towards the east of the Pacific Ocean.
7. The Pacific Ocean is the largest and deepest ocean in the world. It covers the area that is more than the total area of all the continents taken together.
8. The biosphere is the fourth domain of the Earth. It is the zone where land, air and water interact with each other to support life.