Across
- 6. Speed (4)
- 9. Charged particle (3)
- 10. Resistive force (8)
- 13. Launch (6)
- 14. Not mechanical (8)
- 18. Fastest speed is of (5)
- 19. Flame (5)
- 20. Comprised of 7 (7)
Down
- 1. Incendiary (9)
- 2. The one before the dwarf (7)
- 3. Move to and fro (7)
- 4. Used in making batteries (7)
- 5. Used to change direction of a ship (6)
- 7. Imitate (6)
- 8. Extinguish (6)
- 11. The control room of a plane (7)
- 12. Opposite of clear (6)
- 15. Used to prevent wear and tear (9)
- 16. Force of attraction (7)
- 17. Smallest particle (4)