Across
- 6. To understand the nature of our universe, astronomers gather evidence from this kind of radiation.
- 7. The variable, c, is a constant value that is also equal to 300,000,000 m/s (three words).
- 10. The redshift of light is similar to this effect of sound (hint: a siren changing pitch as it moves past you).
- 11. The nearest galaxy to ours.
- 13. The color of galaxies from our perspective as they move faster and further away from us.
- 16. Law that states that the farther away a galaxy is, the faster it is moving.
- 17. The distance between two repeated points on a wave.
- 19. The second lightest and second most abundant element in the universe.
Down
- 1. The first period of time in the universe after the big bang in which there were tremendous fluctuations in energy.
- 2. the acronym for the faint glow of microwave radiation left over from the birth of our universe.
- 3. A unit of measurement of distance that uses the abbreviation ly.
- 4. This is the most common form of electromagnetic radiation to us on Earth.
- 5. Quantum ________ ________ are the seeds for the growth of structure in our universe.
- 8. The lightest and most abundant element in the universe.
- 9. Multiplying the frequency and wavelength of a wave together will get you the wave's _____.
- 12. Time as we know it began with this event.
- 14. Number of waves that are produced in one second.
- 15. If a galaxy were moving toward us, the color would appear to be _____.
- 18. The period of time after the big bang in which the major forces of the universe began to distinguish themselves from each other.
