Keep the Sign of a Temperature Change - Practice 1

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Temperature change is final temperature minus initial temperature. Warming is positive; cooling is negative. A Celsius temperature difference has the same numerical size as a kelvin difference, but absolute readings use different zeros.

Worked example

From 18 C to 12 C, the change is 12 - 18 = -6 C, not +6 C.

Two Celsius scales from 0 to 40 show an initial reading of 18 and a final reading of 12. The difference final minus initial is -6 C, indicating cooling.

Question 1 Fictional sensor A goes from 18 C to 8 C. What is final minus initial temperature, in C? Answer

Question 2 Fictional sensor B goes from 19 C to 11 C. What is final minus initial temperature, in C? Answer

Question 3 Fictional sensor C goes from 20 C to 14 C. What is final minus initial temperature, in C? Answer

Question 4 Fictional sensor D goes from 21 C to 17 C. What is final minus initial temperature, in C? Answer

Question 5 Fictional sensor E goes from 22 C to 20 C. What is final minus initial temperature, in C? Answer