As part of an experiment in the science lab, a thermometer was inserted in a solution in order to measure the temperature over time. At 9:15 a.m. the temperature was –17 °C, and at 11:30 a.m. it was –26 °C. What is the difference between these two measurements? A. 8 °C B. 9 °C C. 11 °C D. 43 °C
The difference between the two measurements is calculated by subtracting the initial temperature from the final temperature: -26 °C - (-17 °C) = -26 °C +17 °C = -9 °C. Therefore, the correct answer is B. 9 °C.
