Across
- 1. in a steam engine, steam is used to move a _____
- 3. trains in japan that operate on magnets
- 4. James Watt's invented a more efficient _____ engine
- 6. Henry Cort was the first to use coal for _____
- 7. the science of comfort
- 10. the internal _____ engine was invented in Germany in 1876
- 11. steam still powers ocean liners by turning large _____
- 13. earliest machines were simple devices to make _____ easier
Down
- 1. a negative side effect of machinery
- 2. the industrial _____ occurred in the 1700's
- 5. changes the motion of pistons
- 8. thomas _____ invented the first practical steam engine in 1699
- 9. the word 'robot comes from the Czech word _____
- 12. machines help people use _____ more efficiently