Unit 2 Vocabulary

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Across
  1. 3. an experimental error that affects the precision of measurements; caused by unpredictable variations in the measuring process.
  2. 8. used to indicate multiples or fractions of a base unit; i.e., kilo-, milli-, etc.
  3. 12. an experimental error that affects the accuracy of measurements; caused by faulty calibration or poorly maintained instruments or faulty reading of the instrument by the user.
  4. 14. a technique for converting between units using the numerical relationship between the units
  5. 15. one of several units used in the International System of Units (SI), including meter, kilogram, liter, mole, second, and Kelvin
  6. 16. the difference between the observed or approximated value and its true value; it is measured by its precision and accuracy
  7. 17. a measurement of the extent of beginning to end of a figure
  8. 18. a system of units that is an extension of the metric system.
  9. 19. last digit in a measurement that is not known with certainty, but is estimated based on the precision of the measuring device
Down
  1. 1. relative error as determined by finding the difference between a measured value and its accepted value, dividing the result by the accepted value, and multiplying by 100 percent.
  2. 2. a decimal-based system of measurement used worldwide for science and everyday purposes
  3. 4. a fraction having a value of 1 that is written from a unit of equality and is used to change a measurement from one unit to another
  4. 5. the amount of space that an object occupies
  5. 6. a method of handling very large or very small numbers that are written as a coefficient that is greater than or equal to one but less than ten that is multiplied by a power of 10.
  6. 7. an indication of how close a measurement is to its actual or accepted value
  7. 9. the measure of the average kinetic energy of the particles, atoms, or molecules within a substance
  8. 10. the quantity of matter in an object
  9. 11. all of the digits that can be known precisely in a measurement, plus one estimated digit
  10. 13. a measure of the agreement between two or more measured values acquired by using the same method;