1. Which American astronaut orbited the Earth first in 1962?

2. What year did women in the United States gain the right to vote?

3. Which Han Dynasty official is traditionally credited with inventing the paper-making process?

4. Early Chinese 'lodestone' compasses were designed to point in which cardinal direction?

5. What was the first message ever sent by Samuel Morse via telegraph in 1844?

6. In what year did Guglielmo Marconi send the first wireless signal across the Atlantic Ocean?

7. What manufacturing innovation did Henry Ford introduce to make the Model T affordable?

8. What specific type of stitch, using two threads, was patented by Elias Howe in 1846?

9. Which element's atoms are most commonly used in the primary standard for atomic clocks?

10. What did Robert Hooke first discover and name while looking through a microscope in 1665?

11. Whose hand was the subject of the first-ever medical X-ray image?

12. What are the four 'strokes' in the internal combustion engine cycle named after Nikolaus Otto?

13. What was the first stethoscope made of?

14. What does the acronym LASER stand for?

15. Why were these armored vehicles originally called 'Tanks' during their development?

16. What material is commonly used in gas mask filters to trap and neutralize toxic gases?

17. Who is the British geneticist who discovered the technique for DNA profiling?

18. What does an electron microscope use instead of light to illuminate a specimen?

19. What did Isaac Newton use instead of a glass lens to gather light in his telescope?

20. Which gas was used in the first successful public demonstration of surgical anesthesia in 1846?