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?
O A.8°C
• B. 9°C
O C. 11 °C
O D. 43 °C
The difference between the two measurements is calculated by subtracting 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
So, the difference between the two measurements is 9 °C. Therefore, the answer is B. 9°C.