1) The concept of gravity was discovered by which famous physicist? a) Albert Einstein b) Sir Isaac Newton c) Galileo Galile d) Nikola Tesla 2) What is the name of the tallest grass on earth? a) Bamboo b) Sugarcane  c) Wheat d) Corn 3) Which is the most abundant element in the universe? a) Carbon b) Oxygen c) Nitrogen d) Hydrogen 4) What is the hardest natural substance on Earth? a) Gold b) Iron c) Diamond d) Quartz 5) What is the study of mushrooms called? a) Botany b) Zoology c) Mycology d) Geology

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