Multiple Choice Question

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