The principal means of heat loss at rest in a cool environment (20$\degree$C/low humidity) is via
A) radiation.
B) conduction.
C) evaporation.
D) convection.

Question

Quizplus · Accepted Answer

At rest in a cool environment, the body loses heat mainly through radiation, where it emits heat energy in the form of infrared waves to the cooler environment. Conduction, which is the transfer of heat from the body to the cooler environment through direct contact, is minimal as there is no direct contact with any cooler surface. Evaporation and convection require movement of air or water molecules, which is also limited when at rest.

The Principal Means of Heat Loss at Rest in a Cool