Unit 5 Review of the Universe

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Across
  1. 2. the force that holds the planets in orbit
  2. 5. amount of matter, stays constant in any location
  3. 8. a star's luminosity, size & temp.
  4. 10. used to study things and make predictions
  5. 13. the avg. distance from the sun to Earth
  6. 16. large loops that explode from the sun
  7. 17. a collection of dust, gas, and billions of stars
Down
  1. 1. longest wavelength, lowest frequency
  2. 3. shortest wavelength, highest frequency
  3. 4. range of radiation, moves at speed of light
  4. 6. the brightness of a star from Earth
  5. 7. its temperature determines its color
  6. 9. the distance light travels in one year
  7. 10. spiral shaped, contains billions of stars
  8. 11. darker, cooler areas on the sun
  9. 12. the smallest portion of the EM Spectrum
  10. 14. the pull of gravity on mass, depends on location
  11. 15. tool used to view objects very far away