Across
- 3. Military Submarine
- 6. This Benjamin Franklin invention heated homes
- 7. Eli Whitney invented this at the home of Mrs. Marshall's Great gr gr gr gr gr Grandmother
- 8. Document that says a person invented something
- 9. He invented the Turtle Submarine
- 10. Invented in Pennsylvania to help colonists move west
- 12. These lenses have two different strengths
Down
- 1. Wheels with grooves cut into their edges that are used to move objects
- 2. This factory used a waterwheel to move pulles and belts to process grain
- 4. Invented the Steam Engine
- 5. Metal pole that attracts lightning
- 11. Thomas Jefferson invented this to send secret messages