Unit 3 Vocabular

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Across
  1. 1. An explosion that's capable of destroying stars
  2. 3. A slowly cooling sphere of carbon
  3. 5. A larger nucleus is formed when several smaller nuclei fuse together
  4. 6. An object that orbits outside the atmosphere of a planet and observes what goes on below
  5. 10. A tide just after a full moon
  6. 11. An object that's gravity is so great, it pulls in everything; including light
  7. 15. The path an object follows as it revolves around another object
  8. 17. The amount of gravitational force on an object
  9. 18. A spacecraft that collects scientific information about a planet, moon, or asteroid
  10. 19. Seven days after a spring tide
  11. 23. The force the Earth exerts to keep your feet on the ground
  12. 25. Rings that rotate around a planet
Down
  1. 2. The pattern of lines when light passes through a prism
  2. 4. A large sphere of hydrogen gas
  3. 7. The distance light travels in a year
  4. 8. An instrument that separates light into different wavelengths
  5. 9. A device that astronomers use to view the stars
  6. 11. The scientific theory about the beginning of the universe
  7. 12. The shift to a different wavelength
  8. 13. A cloud of gas and dust
  9. 14. Our home galaxy
  10. 16. Planets, galaxies, stars, and solar systems are all included in this.
  11. 20. A massive collection of stars, gas, and dust
  12. 21. The rising and falling of the ocean's surface due to the gravitational pull of the moon
  13. 22. A graph that plots how bright versus how hot a star is
  14. 24. The amount of matter in an object