Across
- 2. used to find tempatures of a star based on color
- 5. different types of stars
- 9. units that stars are measured in
- 10. how fast a wave is traveling at
- 11. a trough and a crest together
- 12. bottom of a wave
- 13. brightness how bright a star is to us from earth
Down
- 1. how much energy a star has
- 3. how oftenw waves occur
- 4. the lengh of a wave
- 6. a way to measure a stars distance from earth
- 7. top of a wave
- 8. measures different posoitions of a star
- 14. an interval or portion of time