What is the term for energy transfer by electromagnetic waves?

What is the term for energy transfer by electromagnetic waves?

• A. Radiation
• B. Conduction
• C. Convection
• D. Evaporation

Answer: (A)

Energy transfer by electromagnetic waves is called radiation. It moves energy through space using waves of light and infrared energy, so heat can travel from a hot surface to a cooler one even without touching. Conduction transfers heat through direct contact or through a solid by molecular interactions. Convection transfers heat by the bulk motion of a fluid, like warm air rising. Evaporation is a phase change where liquid becomes gas at the surface, driven by heat but not a heat-transfer mode itself. So radiation is the term that describes energy transfer by electromagnetic waves.

Energy transfer by electromagnetic waves is called radiation. It moves energy through space using waves of light and infrared energy, so heat can travel from a hot surface to a cooler one even without touching. Conduction transfers heat through direct contact or through a solid by molecular interactions. Convection transfers heat by the bulk motion of a fluid, like warm air rising. Evaporation is a phase change where liquid becomes gas at the surface, driven by heat but not a heat-transfer mode itself. So radiation is the term that describes energy transfer by electromagnetic waves.