Across
- 5. sound communication
- 6. it is all around you
- 8. the segment of the electromagnetic spectrum that the human eye can view.
Down
- 1. used to heat food and form of electromagnetic radiation
- 2. humans can detect it as heat and it is the size of a pin point
- 3. causes sunburn
- 4. a form of electromagnetic radiation, similar to visible light
- 7. the smallest wavelengths and the most energy of any wave in the electromagnetic spectrum