Across
- 2. Device used to measure electric current
- 6. Scientist who discovered radiowaves
- 8. Process by which DNA makes a copy of itself
- 9. Radiation used to sterilize medical equipment
- 10. Gas essential for combustion
Down
- 1. Law of motion explaining rocket propulsion
- 3. Metal liquid at room temperature
- 4. Organism that fixes nitrogen in soil
- 5. Scientist who discovered penicillin
- 7. Unit of work