complete the crossword puzzle.
across
1. one half of the height from the peak of the crest to the lowest point of a wave.
2. unit of wavelenght of electromagnrtic wave.
3. a disturbance in a field that carries energy but does not require a medium to travel.
4. unit of frequency of electromagnetic wave
5. a space where electromagnetic waves can travel
6. lowest part of a wave
7. highest part of a wave
8. electromagnetic waves with lowest frequencies.
9. electromagnetic waves with high energy
co distance measured from one crest to the next crest of a wave or from one trough to
second trough
11. number of cycles a wave completes in one second​