Across
- 3. emitted from the sun
- 5. used in radar in communications and for heating in microwave ovens
- 6. a disturbance or vibration that travels through a medium
- 7. highest energy EM wave
- 9. Needs a medium to travel through
- 10. segment of the electromagnetic spectrum that the human eye can view
Down
- 1. typically emitted from heated objects
- 2. Travels through vacuum
- 4. able to pass through many objects opaque to light
- 8. used for long distance communication