Across
- 2. A measure of the energy a wave carries. It’s determined by the distance from the crest or trough to the midline (or resting wave).
- 6. Earthquake waves, sound and water waves require ___ for the waves to travel through such as
- 7. One observation that is used to help support the Big Bang Theory is that ___ are moving apart from a central location.
- 8. When waves are out-of-phase the crest of one wave lines-up with the ___ of the other wave.
- 10. The ___ Theory proposes the universe was created in one giant explosion about 13.7 billion years ago.
- 13. ___ waves do not require matter to travel through.
- 17. Large red giant stars have so much mass & energy that they eventually explode outward into a ___ and become a black hole.
- 18. Out-of-phase waves ___ each other out.
- 19. When waves are in-phase they create a ___ wave.
- 20. When waves are in-phase their ___ and troughs line-up.
Down
- 1. The gravity in a nebula gravity may produce enough heat to cause nuclear ___ (which causes hydrogen protons to join together producing the massive energy just as our sun does).
- 3. Examples of electromagnetic waves include light, radio, ___ and x-rays.
- 4. According to the Big Bang Theory the universe is constantly expanding (even today).
- 5. Another observation that is used to help support the Big Bang Theory is that ___ is observed in the light from other galaxies.
- 9. A wave is a disturbance that transfers ___ from one place to another.
- 11. If the red giant is not as big, after the supernova explosion, just the star’s core is left. This is called a ___ star.
- 12. The # of waves that pass a point in a given amount of time.
- 14. One of these is formed when space dust & gas get pulled together by gravity.
- 15. Wavelength is the length of one ___ wavelength cycle of a wave.
- 16. Low mass stars, like our sun, will eventually expand becoming a Red Giant, condense to form a White Dwarf & then burn out becoming a ___ Dwarf.