Moderate difficulty suitable for most players
Clean Fuel and Hydrogen Power Puzzle
Perfect for beginners with simple, common vocabulary
1
2
3
4
5
6
7
Across
- 1. Substance burned or used for energy
- 2. To move a vehicle using power
- 3. H2O, often split to get hydrogen
- 7. Type of energy that is clean and safe
Down
- 4. Energy or strength used to do work
- 5. Air-like substances, hydrogen is one
- 6. Ability to do work or cause change
Similar Crossword Puzzles
- Moderate difficulty suitable for most players
- Moderate difficulty suitable for most players