Across
- 1. When was Toothbrush invented?
- 3. What is the chemical symbol for gold?
- 4. What is the Heisenberg Uncertainty Principle?
- 9. This poet considered the father of modern Russian literature, wrote *War and Peace.
- 11. Which river is the longest in South America?
- 13. This physicist developed the theory of electromagnetism and the concept of the "electromagnetic field."
- 14. Who is considered the father of modern physics?
- 15. What is the term for the study of the structure, behavior, and evolution of the Earth's physical environment?
Down
- 2. Who is the author of the influential book "The Wealth of Nations", which introduced the concept of modern capitalism?
- 5. What is the most abundant gas in Earth's atmosphere?
- 6. Who is the author of the influential book "Das Kapital"?
- 7. What is the name of the ancient trade route that connected India with the Mediterranean region?
- 8. What is the most powerful telescope ever built?
- 10. In which year did the Titanic sink?
- 12. Who formulated the laws of motion and universal gravitation?