The process by which heat is transferred from one body to another through space is called?

The process by which heat is transferred from one body to another through space is called?

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

Answer: (A)

Heat moving through space uses radiation. This means energy travels as electromagnetic waves and does not need any matter to carry it. In space there’s no air or solid to transfer heat by conduction or convection, so radiation is how the Sun’s warmth reaches Earth and how heat can move between bodies that aren’t touching. Conduction requires contact, convection needs a fluid to circulate heat, and evaporation is a phase-change process, not a heat-transfer mechanism through a vacuum.

Heat moving through space uses radiation. This means energy travels as electromagnetic waves and does not need any matter to carry it. In space there’s no air or solid to transfer heat by conduction or convection, so radiation is how the Sun’s warmth reaches Earth and how heat can move between bodies that aren’t touching. Conduction requires contact, convection needs a fluid to circulate heat, and evaporation is a phase-change process, not a heat-transfer mechanism through a vacuum.