Across
- 2. high focused light
- 7. does not let heat travel
- 8. material that can move electricity
- 9. the range of wavelengths or frequencies over which electromagnetic radiation extends.
Down
- 1. movment of heat
- 3. loud a sound is
- 4. how high a sound is
- 5. the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles that cause ionization
- 6. moving faster