World Geographical Superlatives
Geographical superlatives encompass the extreme physical measurements of Earth's crust, hydrosphere, and landforms. Mount Everest in the Mahalangur Himalayas on the Nepal-China border is the highest peak on Earth at 8,848.86 meters above sea level. The Mariana Trench in the western Pacific Ocean contains Challenger Deep, the lowest known point on Earth at approximately 10,994 meters below sea level. The Nile River in Africa is the longest river globally at 6,650 km, while South America's Amazon River discharges the highest volume of water and holds the largest drainage basin. The Caspian Sea is the world's largest inland water body by area and volume, and Lake Baikal in Siberia is the deepest freshwater lake. Antarctica is the largest desert overall, while the Sahara is the largest hot desert.
Key Concepts & Examination Highlights
- Mount Everest is the highest mountain peak above sea level at an officially surveyed elevation of 8,848.86 meters.
- Challenger Deep in the Mariana Trench is the deepest surveyed oceanic point on Earth at approximately 10,994 meters.
- The Nile River is the longest river in the world (6,650 km), while the Amazon River has the largest drainage basin and discharge volume.
- Lake Baikal in Russia is the world's oldest and deepest freshwater lake, containing 20% of Earth's unfrozen surface freshwater.
- The Sahara Desert is the largest subtropical hot desert on Earth, spanning approximately 9.2 million square kilometers.