Unit One : The Universe and Our Solar System

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Across
  1. 4. The first phase of every star's life cycle.
  2. 6. The phenomenon of a sound getting louder as it approaches and quieter after it passes.
  3. 8. Terra means __________.
  4. 10. our sun is a _________.
  5. 11. The name for the first four planets in our solar system.
  6. 14. The colder temperatures of the Jovian planets allows hydrogen and helium to ________________.
  7. 16. The process that pushes with an outward force inside of a star to balance the gravity pushing in.
  8. 17. The wavelength for red colors in the spectrum are ________.
  9. 18. The force that pulls moons to planets and us to the ground.
  10. 19. The band of rocks between Mars and Jupiter.
Down
  1. 1. The phase of a star's life where it gets way bigger, then way smaller as it uses up its hydrogen fuel and the forces inside the star are out of balance.
  2. 2. The boundary in our solar system where the temperature drops.
  3. 3. The red light given off by an object in space as it moves away from Earth.
  4. 5. The band of rocks on the far edge of our solar system, where pluto lives.
  5. 7. To gather or stick together.
  6. 9. The element that is everywhere in the universe
  7. 10. The process of a high mass star collapsing on itself.
  8. 12. No matter what, stars ________ mass over time
  9. 13. The name for the last four planets in our solar system.
  10. 15. Terrestrial planets have a higher _________ than Jovian planets.
  11. 18. To be made of gas