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Two thermometers consistently differ by two degrees in the same liquid. Which step is best for identifying the cause?

Answer and explanation

Correct answer: Check the calibration of both against a standard temperature reference

Direct answer: B, check the calibration of both thermometers against a standard temperature reference. If two instruments differ by the same two degrees repeatedly in the same liquid, the difference is systematic rather than random and may come from calibration or zero error. Step by step: use a reliable standard or reference point, place both thermometers under the same conditions, compare each reading with the standard, and inspect the instruments. B identifies the cause scientifically. A only combines numbers and hides the disagreement. C arbitrarily favours one reading. D changes the liquid without testing the likely instrument cause. Memory cue: a constant error calls for calibration checking.

Related tags

CalibrationThermometerSystematic-ErrorStandard-ReferenceScientific Questions And ObservationsExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScience

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