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?
To find the difference between the two temperatures, we subtract the initial temperature from the final temperature.
Final temperature: -26 °C
Initial temperature: -17 °C
Difference = Final temperature - Initial temperature
Difference = (-26 °C) - (-17 °C)
Difference = -26 °C + 17 °C
Difference = -9 °C
Therefore, the difference between the two measurements is 9 °C.