Across
- 3. A famous scientist developing the theory of relativity
- 4. A large body of saltwater
- 5. Capital along the Seine, famed for romance and history (
- 7. A celestial body that orbits a planet
Down
- 1. A shape with four equal sides and angles
- 2. A tool used for measuring time
- 3. The process of converting liquid to gas
- 6. The smallest unit of an element