Across
- 5. A crop that George Washington Carver studied extensively.
- 6. A crop that damaged the soil when overgrown in the South.
- 7. A person who solves complex problems using mathematics.
- 8. A light system that controls cars at intersections.
- 9. A person who starts and runs a business.
- 11. A farming method that improves soil by alternating crops.
- 13. The institute where George Washington Carver taught.
- 14. A professional trained to design and build machines.
- 15. An expert who studies the natural world and conducts research.
- 17. Legal protection for an invention.
- 18. A public act of standing up against unfair treatment.
- 19. A protest where people refuse to use or buy something.
Down
- 1. The popular water toy invented by Lonnie Johnson.
- 2. The belief that all people deserve the same rights and opportunities.
- 3. Unfair treatment based on race or gender.
- 4. The space mission that landed the first humans on the Moon (Apollo 11).
- 10. The U.S. space agency where Katherine Johnson worked.
- 12. The separation of people based on race.
- 13. What vehicles move through at intersections and must be controlled.
- 16. A person who creates new devices or ideas.