| Hint | Answer | % Correct |
|---|---|---|
| Tallest mountain (height above sea level) | Mount Everest | 98%
|
| Longest river | Nile River | 98%
|
| Biggest ocean | Pacific Ocean | 98%
|
| Longest mountain range (on land) | Andes | 95%
|
| Deepest ocean trench | Mariana Trench | 94%
|
| Biggest tropical rainforest | Amazon Rainforest | 93%
|
| Biggest desert (excluding polar deserts) | Sahara Desert | 93%
|
| Biggest island | Greenland | 87%
|
| Largest freshwater lake by surface area | Lake Superior | 84%
|
| Tallest waterfall | Angel Falls | 83%
|
| Largest lake by surface area | Caspian Sea | 82%
|
| Deepest lake | Lake Baikal | 80%
|
| Largest coral reef system | Great Barrier Reef | 79%
|
| Biggest waterfall (by maximum flow rate) | Victoria Falls | 74%
|
| Biggest peninsula | Arabian Peninsula | 72%
|
| Biggest bay | Bay of Bengal | 68%
|
| Tallest mountain (from base to summit) | Mauna Kea | 67%
|
| Tallest free-standing mountain | Mount Kilimanjaro | 66%
|
| Tallest mountain (when measured from the earth's core) | Mount Chimborazo | 36%
|
| Longest valley | Great Rift Valley | 31%
|