Heat is measured in

• A. Fahrenheit
• B. Celsius
• C. Kelvin
• D. Rankine

Answer: (B)

Heat is energy in transit between objects due to a difference in temperature, not a value you read off a thermometer. It’s measured in energy units, most commonly joules in the SI system or calories. The options listed are temperature scales—Fahrenheit, Celsius, Kelvin, and Rankine—that describe how hot or cold something is, but they don’t quantify how much energy has been transferred. So, none of these options truly measures heat. In practice, you’d use joules or calories to measure heat, while these scales would be used to report temperature. This distinction between heat (energy transfer) and temperature (how hot or cold something is) is the key concept.