This statement is commonly debated. While the Nile River (about 6,650 km) is traditionally considered the longest, recent studies suggest the Amazon may be slightly longer (about 6,992 km) depending on measurement methodology. The Amazon, however, holds undisputed records for the largest drainage basin and highest volume of water discharge.

True. Mount Everest rises to 8,848.86 meters (29,031.7 feet). Its summit was first reached by Sir Edmund Hillary (New Zealand) and Tenzing Norgay (Nepal) in 1953. The mountain is called Sagarmatha in Nepali and Chomolungma in Tibetan.

True. The Yangtze River stretches approximately 6,300 kilometers (3,915 miles), making it the third-longest river in the world after the Nile and Amazon. It drains into the East China Sea. The Three Gorges Dam, the world's largest hydroelectric power station, is located on this river.

True. K2 (8,611 meters / 28,251 feet) is considered more difficult and dangerous to climb than Everest due to its steep, consistent slopes and unpredictable weather. Approximately one in four climbers who attempt the summit die, compared to about one in 25 on Everest.

False. While the Mississippi River is a major North American river, the Missouri River (a tributary of the Mississippi) is actually longer. The Mississippi-Missouri river system combined is the fourth longest in the world, but individually, the Missouri River (approx. 3,767 km) exceeds the Mississippi (approx. 3,730 km).

True. The Andes extend from Venezuela and Colombia through Ecuador, Peru, Bolivia, Chile, and Argentina to the southern tip of Patagonia (Tierra del Fuego). They contain the highest peak outside Asia, Aconcagua (6,961 meters / 22,838 feet), located in Argentina.

True. The Rhine River is approximately 1,230 kilometers (760 miles) long. It flows through six countries: Switzerland, Liechtenstein, Austria, Germany, France, and the Netherlands. The Lorelei is a 132-meter-high rock slate cliff on the Rhine in Germany, associated with a legendary siren.

True. The Ganges (Ganga) originates in the Himalayas and flows 2,525 kilometers to the Bay of Bengal. Millions of Hindus perform ritual bathing and cremation ceremonies along its banks. Despite its spiritual significance, the river contains high levels of untreated sewage, industrial chemicals, and partially cremated remains.

True. Mauna Kea rises 10,210 meters (33,500 feet) from its base on the Pacific Ocean floor to its summit, making it taller than Mount Everest's 8,848.86 meters above sea level. However, only about 4,205 meters (13,796 feet) are above sea level. It is a dormant volcano.

True. The Ural Mountains stretch approximately 2,500 kilometers (1,550 miles) from the Arctic Ocean to the Ural River in northwestern Kazakhstan. They are conventionally considered the border between Europe and Asia. Formed about 250-300 million years ago, they are heavily eroded but mineral-rich.