Physics

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Across
  1. 3. the S.I unit of mass
  2. 5. the error that occurs when the eye is not positioned correctly during measurement by a ruler.
  3. 6. the discoverer of a pendulum.
  4. 8. every measurement has two parts-a unit and ______.
  5. 10. it is the amount of matter an object contains.
  6. 11. the longer unit of time that was given by the cycle of seasons caused by the revolution of the Earth.
  7. 12. the S.I unit of time.
  8. 14. the fixed known quantity used to measure something.
Down
  1. 1. The instrument which is used to measure length.
  2. 2. the fixed time taken by a pendulum to complete one to-and-fro motion.
  3. 4. those who were the first to come up with the smaller units of time.
  4. 7. the instrument used to measure mass.
  5. 9. the S.I unit of length.
  6. 13. it is the length of a elbow to the tip of a middle finger.