1. What was the name of the ship on which the Pilgrims traveled to America in 1620?

2. What year did World War I begin?

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

4. What is the primary function of an Archimedes' screw?

5. Who is the American inventor of the first fully electronic television system?

6. What component, originally used in WWII radar systems, is the heart of a microwave oven?

7. What does a hovercraft travel on to reduce friction and allow for high-speed movement?

8. What physical principle allows light to stay inside a fiber optic cable without leaking out?

9. Why is the steam turbine more efficient than the traditional steam engine used in locomotives?

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

11. Which element is added to steel to make it 'stainless' and resistant to rust?

12. What radioactive isotope is commonly used in ionization smoke detectors?

13. Why is a chip card more secure than a magnetic stripe card?

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

15. In what century did steamboats first become commercially successful?

16. Who is most famously credited with developing the first commercially successful steamboat in the United States?

17. A steamboat with a single large wheel mounted at the back is known as what type?

18. What was a major danger of 19th-century steamboat travel?

19. What job was responsible for navigating the river safely around sandbars and hazards?

20. Today, most operating steamboats in the United States are used primarily for what purpose?