Across
- 5. A positively charged subatomic particle
- 6. A subatomic particle that has no charge
- 7. The distance between two crests
- 9. A negatively charged subatomic particle
- 10. The basic unit of a chemical element
Down
- 1. The largest planet in our solar system
- 2. The bottom of a wave
- 3. The center of our solar system
- 4. The Earth makes on of these every 24 hours
- 8. The top of a wave