Which quantity is used to describe how hot or cold something is?

Which quantity is used to describe how hot or cold something is?

• A. Humidity
• B. Temperature
• C. Velocity
• D. Volume

Answer: (B)

Temperature describes how hot or cold something is because it reflects the average kinetic energy of the particles in a substance. In practice, we read it with thermometers and use it to control refrigeration processes, such as setting evaporator temperatures or assessing heat transfer. Humidity measures moisture, not heat content; velocity is the speed of motion; volume is the amount of space something occupies. Since only temperature directly quantifies hotness or coldness, it is the correct quantity.

Temperature describes how hot or cold something is because it reflects the average kinetic energy of the particles in a substance. In practice, we read it with thermometers and use it to control refrigeration processes, such as setting evaporator temperatures or assessing heat transfer. Humidity measures moisture, not heat content; velocity is the speed of motion; volume is the amount of space something occupies. Since only temperature directly quantifies hotness or coldness, it is the correct quantity.