Across
- 3. zone of the sun where heat moves out of the core
- 5. center of the sun where nuclear fusion takes place
- 8. distance light travels in one year used to measure distances outside the Solar System
- 11. middle atmosphere layer of sun appears bright red
- 13. average distance between the Earth and Sun used to measure distances within the Solar System
- 16. the distance between waves
- 17. appears as a loop of hot gas from the sun
- 19. transfer of energy using waves and without a medium (thru empty space)
- 21. part of the electromagnetic spectrum that we can see with our eyes
- 22. all frequencies and wavelengths of light radiation
- 25. the highest energy waves with the highest frequency
Down
- 1. first atmosphere layer of sun gives off visible light
- 2. the brightness of a star as it looks from Earth
- 4. the lowest energy waves with the lowest frequency
- 6. cooler dark area on the sun
- 7. color of the hottest stars
- 9. the brightness of a star as it is no matter from a standard distance
- 10. color of the coolest stars
- 12. chart that shows the absolute brightness of discovered stars
- 14. sudden intense burst of energy from the sun
- 15. zone of the sun where hot plasma rises and cools near the surface
- 18. everything we can see, measure or detect
- 20. how many waves pass a given point per second
- 23. collection of billions of stars and their planetary systems
- 24. outermost layer visible during an eclipse