What term describes an object that emits visible light and infrared radiation due to being heated?

The term that accurately describes an object that emits visible light and infrared radiation due to being heated is "incandescent." When materials are heated to a high enough temperature, they begin to glow, producing visible light and infrared radiation as a result of the thermal energy. This phenomenon is a direct consequence of the thermal motion of atoms and molecules within the material, ultimately leading to the emission of light across multiple wavelengths, including both visible and infrared.

In contrast, fluorescent materials emit light through a different process, where they absorb energy and then re-emit it almost immediately at a different wavelength, but this does not primarily occur due to heating. The term "conductive" relates to the transfer of heat or electricity through a material, and while conductive materials may heat up and become incandescent, conductivity itself does not imply light emission. "Reflective" refers to the ability of a surface to reflect light rather than emit it, which is distinctly different from the concept of an object that radiates light due to heating. Thus, the answer accurately captures the defining characteristic of an incandescent object.