1. Widest waterfall   Grande Falls   Yosemite Falls   Khône Falls   Boyoma Falls   Niagara Falls   Hint Half-n-half Clue   2. Satellite farthest from the parent planet   Sinope   Titan   Charon   Hyperion   Ganymede   Half-n-half Clue   3. Largest ocean in the world   Indian Ocean   Arctic Ocean   Pacific Ocean   South China Sea   Atlantic Ocean   Half-n-half Clue   4. Planet closest to Earth   Sun   Mercury   Mars   Moon   Venus   Half-n-half Clue   5. Largest desert   Kalahari Desert   Gobi Desert   Chihuahuan Desert   Atacama Desert   Sahara Desert   Half-n-half Clue   6. Largest active volcano   Stromboli, Italy   Etna, Sicily   Mount St Helens, US   Mt Cameroon, Cameroon   Mauna Loa, Hawaii   Half-n-half Clue   7. Largest planet of our solar system   Jupiter   Pluto   Saturn   Neptune   Uranus   Half-n-half Clue