1) Who is known as the father of modern physics? a) Isaac Newton b) Albert Einstein c) Galileo Galilei d) Nikola Tesla 2) What is the chemical symbol for water? a) H2O b) CO2 c) O2 d) NaCl 3) Which planet is known as the "Red Planet"? a) Venus b) Mars c) Jupiter d) Saturn 4) What is the Earth's largest ocean? a) Atlantic Ocean b) Indian Ocean c) Pacific Ocean d) Arctic Ocean 5) What force pulls objects towards the center of the Earth? a) Magnetism b) Gravity c) Friction d) Tension 6) Which gas do plants absorb from the atmosphere during photosynthesis? a) Oxygen b) Nitrogen c) Carbon Dioxide d) Hydrogen 7) What is the smallest unit of matter? a) Molecule b) Atom c) Cell d) Electron 8) What is the process by which plants make their own food? a) Respiration b) Fermentation c) Photosynthesis d) Combustion 9) How many continents are there on Earth? a) 5 b) 6 c) 7 d) 8 10) What is the largest mammal on Earth? a) Elephant b) Blue Whale c) Giraffe d) Gorilla 11) What is the Earth's primary source of energy? a) Wind b) Solar c) Geothermal d) Hydroelectric 12) What is the process of turning a liquid into a gas called? a) Condensation b) Evaporation c) Sublimation d) Melting 13) What is the chemical symbol for gold? a) Au b) Ag c) Fe d) Cu 14) Which gas do humans breathe out during respiration? a) Oxygen b) Nitrogen c) Carbon Dioxide d) Hydrogen 15) Which planet is known as the "Blue Planet"? a) Venus b) Mars c) Earth d) Jupiter 16) What is the process of the Earth spinning on its axis? a) Revolution b) Rotation c) Inclination d) Orbit 17) Who developed the laws of motion and universal gravitation? a) Galileo Galilei b) Isaac Newton c) Johannes Kepler d) Nikola Tesla 18) What is the largest planet in our solar system? a) Earth b) Jupiter c) Venus d) Mars 19) What is the chemical symbol for carbon dioxide? a) H2O b) CO2 c) O2 d) NaCl 20) Which planet is known as the "Morning Star" or the "Evening Star"? a) Venus b) Mars c) Jupiter d) Saturn

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