Scientific Vocabulary

1234567891011121314151617181920212223
Across
  1. 2. - This is the smallest change in the quantity being measured (input) of a measuring instrument that gives a perceptible change in the reading.
  2. 5. - Information, either qualitative or quantitative, that has been collected.
  3. 7. - Suitability of the investigative procedure to answer the question being asked. For example, an investigation to find out if the rate of a chemical reaction depended upon the concentration of one of the reactants would not be a valid procedure if the temperature of the reactants was not controlled.
  4. 9. - If the original experimenter repeats the investigation using same method and equipment and obtains the same results.
  5. 10. - The quantity between readings, eg a set of 11 readings equally spaced over a distance of 1 metre would give an interval of 10 centimetres.
  6. 13. error - These cause readings to differ from the true value by a consistent amount each time a measurement is made.
  7. 14. test - A fair test is one in which only the independent variable has been allowed to affect the dependent variable.
  8. 16. - The measurements are ones in which there is very little spread about the mean value.
  9. 18. graph - 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.
  10. 19. - A statement suggesting what will happen in the future, based on observation, experience or a hypothesis.
  11. 22. - If the investigation is repeated by another person, or by using different equipment or techniques, and the same results are obtained.
  12. 23. conclusion - A conclusion supported by valid data, obtained from an appropriate experimental design and based on sound reasoning.
Down
  1. 1. error - Any indication that a measuring system gives a false reading when the true value of a measured quantity is zero, eg the needle on an ammeter failing to return to zero when no current flows.
  2. 3. - Data which has been shown to be valid.
  3. 4. error - The difference between a measured value and the true value.
  4. 6. - A measurement result is considered accurate if it is judged to be close to the true value.
  5. 8. value - This is the value that would be obtained in an ideal measurement.
  6. 11. - The interval within which the true value can be expected to lie, with a given level of confidence or probability, eg “the temperature is 20 °C ± 2 °C, at a level of confidence of 95%.
  7. 12. - These are values in a set of results which are judged not to be part of the variation caused by random uncertainty.
  8. 15. - The maximum and minimum values of the independent or dependent variables; important in ensuring that any pattern is detected.
  9. 17. error - These cause readings to be spread about the true value, due to results varying in an unpredictable way from one measurement to the next.
  10. 20. - Marking a scale on a measuring instrument.
  11. 21. - A proposal intended to explain certain facts or observations.