Question

In each of the following pairs, determine the temperature change, and whether the temperature increased or decreased. a. 45° F to –10° F b. 35° C to 80° F c. –19° C to 49° C d. 137° C to 0° C e. 5° C to 19° F f. 68° F to 29° C

Answer 1

These are six questions and six answers.

1) Question a.45° F to –10° F


i) Temperature change = Final temperature - Initial temperature


ii) Temperature change = -10 °F - 45°F = - 55 °F


iii) Conclusion: The temperature decreased 55°F


2) Question b. 35° C to 80° F


i) Convert 35°C to °F: 35 × 1.8 + 32 = 95°F


iii) Temperature change = final temperature - initial temperature = 80°F - 95°F = - 15°F


iv) Conclusion: The temperature decreased 15°F


3) Question c. –19° C to 49° C


i) Temperature change = final temperature - initial temperature = 49°C - (-19°C) = 49°C + 19°C = 68°C


ii) Conclusion: The temperature increased 68°C


4) Question d. 137° C to 0° C


i) Temperature change = final temperature - initial temperature = 0°C - 137°C = - 137°C


ii) Conclusion: The temperature decreased 137°C


5) Question e. 5° C to 19° F


i) Convert 5°C to °F


5 × 1.8 + 32 = 9 + 32 = 41°F


ii) Temperature change = final temperature - initial temperature = 19°F - 41°F = - 22°F


iii) Conclusion: The temperature decreased 22°F


6) Question f. 68° F to 29° C

i) Convert 68°F to °C

(68 - 32) / 1.8 = 20°C


ii) Temperature change = 29°C - 20°C = 9°C

iii) The temperature increased 9°C.