Install QuizVortex App
Play offline · Home screen icon · Faster loading
30 medium science questions including atoms, cells, and the universe.
1. How many chromosomes does a normal human cell contain?
💡 Human cells contain 46 chromosomes in 23 pairs. One chromosome in each pair comes from each parent.
2. Which scientist proposed the heliocentric model of the solar system?
💡 Nicolaus Copernicus proposed in 1543 that the Sun not the Earth was the center of the solar system.
3. What type of rock is formed from cooled lava or magma?
💡 Igneous rocks form when magma cools and solidifies. Granite forms underground while basalt forms at the surface.
4. What is the unit of electrical resistance?
💡 The ohm is the unit of electrical resistance. Ohm's Law states voltage equals current multiplied by resistance.
5. What is the name of the process by which plants lose water through their leaves?
💡 Transpiration is the process where plants release water vapor through tiny pores called stomata.
6. What is the protein that carries oxygen in red blood cells?
💡 Hemoglobin is an iron-containing protein that binds oxygen in the lungs and carries it throughout the body.
7. Which blood type is the universal recipient?
💡 AB positive is the universal recipient — people with this blood type can receive blood from any other blood type.
8. What is the scale used to measure earthquake magnitude?
💡 The Richter Scale was developed by Charles Richter in 1935. Each whole number increase represents 10x more shaking.
9. Which planet has the longest day in our solar system?
💡 A day on Venus lasts 243 Earth days — longer than its year of 225 Earth days.
10. What scientist discovered penicillin?
💡 Alexander Fleming discovered penicillin in 1928 when he noticed mold killing bacteria in his petri dish.