There are 7 continents on Earth - North America, South America, Europe, Asia, Africa, Australia, and Antarctica. The Earth is made up of 71% water and 29% land, with oceans surrounding the continents. Asia is the largest continent and is surrounded by the Arctic, Pacific, and Indian Oceans. Major geographic features include Mount Everest on the Nepal/Tibet border, the Nile River flowing through several African countries, and the Panama isthmus connecting North and South America. The 4 oceans are the Pacific, Atlantic, Indian, and Arctic.