1. How many elements are in the periodic table? 118
2. Which planet in the Milky Way is the hottest? Venus
3. Who discovered that the Earth revolves around the sun? Nicolaus Copernicus
4. Which planet has the most moons? Saturn
5. Which planet is closest to the sun? Mercury
6. Where is the strongest human muscle located? Jaw
7. Which is the only body part that is fully grown from birth? Eyes
8. How many bones do we have in an ear? 3
9. What scientific theory proposed that Earth revolves around the sun? Heliocentrism
10. What is the process by which plants convert sunlight to energy? Photosynthesis
11. What is the scientific theory that explains the origin of the universe? The Big Bang Theory
12. What is the name of the world's first artificial satellite? Sputnik 1
13. What is the chemical element with the symbol Fe? Iron
14. What is the smallest unit of matter? Atom
15. What is the outermost layer of the Earth’s atmosphere called? Exosphere
16. What is the process by which a liquid changes into a gas? Evaporation
