Which of these statements correctly describes radiation?
A)It refers to heat emission from a warm object in the form of electromagnetic waves.
B)It is a source of only heat loss for the body (i.e., the body can lose but cannot gain heat by radiation).
C) It refers to the transfer of heat by direct contact between a warmer object and a cooler object.
D) It involves the continued cycling of cool air over the body.

Question

Quizplus · Accepted Answer

Radiation refers to the emission of energy in the form of electromagnetic waves, which can include visible light, infrared radiation, and ultraviolet radiation. It can be both a source of heat gain (e.g., from sunlight) and heat loss (e.g., from a warm object emitting infrared radiation). Options B, C, and D describe other forms of heat transfer, such as conduction and convection, but do not accurately describe radiation.

Which of These Statements Correctly Describes Radiation