Across
- 1. one trough and one crest
- 3. time needed to complete a full cycle of a repetitive event
- 6. hot bright the star actuly is
- 9. highest point of a wave
- 11. to find distance to near stars
- 13. the lowest point of a wave
- 14. Waves per second
Down
- 2. in 1 wave, the size of the displacement of a paticular portion of the wave
- 4. Different types of waves
- 5. how fast light travels in 1 year
- 7. Stars making up a picture/Pattern
- 8. length of a wave
- 10. distance/time
- 12. brightness how bright it seems from earth