Across
- 3. An atom with a charge
- 4. Type of wave that can move through an empty space
- 9. The speed with direction
- 10. Measures amps
- 11. adds energy to something
- 12. The energy of movement
Down
- 1. Number of neutrons and protons
- 2. Type of wave that needs particles to move through
- 5. Without charge
- 6. Heat transfer in a solid
- 7. The unit for wavelengths
- 8. Unit of energy