Radiation allows heat to travel through empty space (a vacuum) without a medium.
true or false
False. Radiation allows heat to transfer in the absence of a medium, but it still requires energy to be transferred through electromagnetic waves.
True. Radiation is the transfer of heat through electromagnetic waves, such as infrared radiation. Unlike conduction or convection, radiation can occur in a vacuum, where there is no medium for heat to be conducted or convected through. This is why we can feel the heat from the sun, even though there is no direct contact between us and the sun.
True.
Radiation is the transfer of heat through electromagnetic waves. Unlike conduction or convection, which require a medium (such as a solid, liquid, or gas), radiation can occur in a vacuum. This is because electromagnetic waves can propagate through empty space.
To better understand this, you can think of radiation as similar to how light travels from the Sun to the Earth. In the vacuum of space, there is no air or other material to act as a medium for conduction or convection, so the heat from the Sun reaches us through radiation.
So, in summary, radiation can indeed transfer heat through empty space, making the statement true.