Across
- 3. can go through skin but not bone
- 5. transmits heat from sun, fire, and radiators
- 6. used in cooking, radar, and telephone and absorbs water molecules
- 7. the name given to a group of energy waves that are mostly invisible and can travel through empty space
- 8. used to broadcast radio and television and has the longest wavelength
Down
- 1. can come from nuclear reactions or radioactivity and has the shortest wavelength
- 2. absorbed by the skin and can cause cancer
- 4. makes things able to be seen and is shown through colors