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Core scientific concepts every curious mind should know. 56 questions across biology, chemistry and physics — test yourself for free on QuizVortex!
1. What is the powerhouse of the cell?
💡 The mitochondria produce ATP (adenosine triphosphate), the energy currency of the cell.
2. What is the half-life of Carbon-14?
💡 Carbon-14 has a half-life of approximately 5,730 years, making it useful for radiocarbon dating.
3. Which planet is known as the Red Planet?
💡 Mars appears red due to iron oxide (rust) on its surface.
4. What is the most abundant element in the universe?
💡 Hydrogen makes up about 75% of all normal matter in the universe.
5. DNA stands for:
💡 DNA stands for Deoxyribonucleic Acid, the molecule that carries genetic information.
6. What is the speed of light in a vacuum?
💡 The speed of light in a vacuum is approximately 299,792 km/s (299,792,458 m/s).
7. Which gas is most abundant in Earth's atmosphere?
💡 Nitrogen makes up about 78% of Earth's atmosphere, followed by oxygen at 21%.
8. What is Newton's First Law of Motion?
💡 Newton's First Law, also called the law of inertia, states that objects maintain their state of motion unless a net external force acts upon them.
9. What is the atomic number of Carbon?
💡 Carbon has atomic number 6, meaning it has 6 protons in its nucleus.
10. What is the chemical formula for water?
💡 Water consists of two hydrogen atoms and one oxygen atom, giving the formula H₂O.