1. Which star color indicates an 8000K main sequence star? (1) blue (3) yellow (2) white (4) red

3. Light, stars, and the expanding universe… Textbook Pages 612-616

5. Which type of electromagnetic energy has the longest wavelength? (1) infrared radiation (2) radio wave radiation (3) ultraviolet radiation (4) x-ray radiation

7. Light takes.0000000002 seconds

8. Light takes about 1.5 seconds

9. Light takes about 8.5 minutes

12. Our telescopes really look into the past. Billions of years ago we see the energy from the “Big Bang”.