Across
- 5. Area where wheel was first invented
- 7. Turning the wheel requires more __________
- 8. The rod around which the wheel rotates
- 9. Which is easier to turn, the wheel or axle?
- 10. Oldest known image of a wheel
- 12. The wheel and axle spin around the _________
- 13. A wheel and axle is just like a _________ that rotates
Down
- 1. Abbreviation for "Before common era"
- 2. Example of a wheel and axle
- 3. Turning the wheel requires less __________
- 4. What type of a machine is a wheel and axle?
- 6. Word that means 1000 years
- 11. American civilization before Mayan and Aztec