Science Quiz ChallengeVersión en línea Test your knowledge of science with these fun and challenging questions! por Ness Gaming 1 What is the chemical symbol for water? a O2 b CO2 c H2O d H2 2 What is the powerhouse of the cell? a Nucleus b Mitochondria c Endoplasmic Reticulum d Ribosome 3 What is the speed of light in a vacuum? a 150,000 km/s b 299,792 km/s c 1,000,000 km/s d 300,000 km/s 4 Which planet is known as the Red Planet? a Venus b Mars c Jupiter d Saturn 5 What is the most abundant gas in Earth's atmosphere? a Oxygen b Hydrogen c Carbon Dioxide d Nitrogen 6 What is the process by which plants make their food? a Transpiration b Respiration c Photosynthesis d Fermentation 7 What is the smallest unit of life? a Cell b Tissue c Atom d Molecule 8 What is the main gas responsible for climate change? a Nitrogen b Methane c Oxygen d Carbon Dioxide 9 Which organ is responsible for pumping blood? a Liver b Lungs c Kidneys d Heart 10 What is the study of living organisms called? a Physics b Chemistry c Biology d Geology
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