quiz 1142 – nature quiz (QA) print friendly version Click on question to reveal answer 1 Which is the only planet in out solar system not named after a god? 2 Which is the softest mineral on the Mohs Scale? 3 Which is the largest ocean on Earth? 4 Which is the longest river in the world? 5 In which US state is the world's largest volcano? 6 What colour is a polar bears skin? 7 Which is the highest waterfall in the world? 8 The bark of which tree was the original source of making aspirin? 9 Which was the world's first National Park? 10 Which desert in Chile is the driest in the world? 11 What are the formations of calcium carbonate which hang down from the roof of a cave? 12 What is the green pigment called which is found in nearly all plants? 13 How many points do snowflakes have? 14 Nephology is the study of what? 15 Which English scientist first described the colours of the rainbow as 'numbering seven'? 16 Rafflesia Arnoldii, the world's largest flower, is better known by what name? 17 The largest individual tree in the world, a Giant Redwood, is known by what name? 18 Cattleya Labiata is a species of which exotic flowering plant? 19 The Grand Canyon in Arizona was carved by which river? 20 Agriglyphs are better known by what name?