Science

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Across
  1. 1. direction of an object appears to differ when viewed from different positions
  2. 5. gaps between the constituent particles
  3. 6. a class of variable stars whose luminosity fluctuates with an extremely regular period.
  4. 9. system of millions or billions of stars
  5. 11. branch of physics involving the study of the electromagnetic force
  6. 12. How hot or cold something is
  7. 14. rate at which the value of a currency is falling and, consequently, the general level of prices for goods and services is rising.
  8. 15. primary unit of temperature measurement You use this when you do build things
Down
  1. 2. can be described as the opposite of ordinary matter.
  2. 3. measure the intensity of a light with this
  3. 4. any decrease in an electromagnetic wave ’ s frequency
  4. 7. pair of equal and oppositely charged
  5. 8. displacement of the spectrum to shorter wavelengths in the light
  6. 10. you can tell this on a clock
  7. 13. the science of the origin and development of the universe.