Physics Key Words Crossword

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Across
  1. 2. A measurement is __________ if the original experimenter repeats the investigation using same method and equipment and obtains the same results.
  2. 3. This variable is the variable for which values are changed or selected by the investigator.
  3. 5. These cause readings to be spread about the true value, due to results varying in an unpredictable way from one measurement to the next.
  4. 6. A conclusion supported by valid data, obtained from an appropriate experimental design and based on sound reasoning.
  5. 11. The interval within which the true value can be expected to lie. Whenever a measurement is made, there will always be some doubt about the result obtained.
  6. 12. These variables have values that are labels, eg names of plants or types of material.
  7. 13. Marking a scale on a measuring instrument. This involves establishing the relationship between indications of a measuring instrument and standard or reference quantity values, which must be applied.
  8. 15. A measurement is __________ if the investigation is repeated by another person, or by using different equipment or techniques, and the same results are obtained.
  9. 19. These cause readings to differ from the true value by a consistent amount each time a measurement is made.
  10. 22. A proposal intended to explain certain facts or observations.
  11. 23. Describes how much spread there is in the data, around the mean value. It gives no indication of how close results are to the true value.
  12. 24. Suitability of the investigative procedure to answer the question being asked.
  13. 25. These are values in a set of results which are judged not to be part of the variation caused by random uncertainty.
  14. 27. A measurement result is considered ________ if it is judged to be close to the true value.
  15. 29. This is the value that would be obtained in an ideal measurement.
  16. 30. The difference between a measured value and the true value.
Down
  1. 1. This variable is the variable of which the value is measured for each and every change in the independent variable.
  2. 4. A statement suggesting what will happen in the future, based on observation, experience or a hypothesis.
  3. 7. These are physical, chemical or biological quantities or characteristics.
  4. 8. Any indication that a measuring system gives a false reading when the true value of a measured quantity is zero.
  5. 9. Information, either qualitative or quantitative, that has been collected.
  6. 10. A test in which only the independent variable has been allowed to affect the dependent variable.
  7. 14. The maximum and minimum values of the independent or dependent variables.
  8. 16. This is the smallest change in the quantity being measured (input) of a measuring instrument that gives a perceptible change in the reading.
  9. 17. This variable is one which may, in addition to the independent variable, affect the outcome of the investigation and therefore has to be kept constant or at least monitored.
  10. 18. The inevitable uncertainty in a measurement.
  11. 20. A line graph, not necessarily on a grid, that shows the general shape of the relationship between two variables. It will not have any points plotted and although the axes should be labelled they may not be scaled.
  12. 21. The quantity between readings on a measurement device.
  13. 26. Data which has been shown to be valid.
  14. 28. These variables can have values (called a quantity) that can be given a magnitude either by counting (as in the case of the number of shrimp) or by measurement (eg light intensity, flow rate etc).