Final answer:
The frequency of a blackbody's emission increases with temperature because the emitted radiation shifts towards shorter wavelengths (higher frequencies) as the temperature rises, although the relationship is not linear, so frequency does not double with the doubling of temperature.
Step-by-step explanation:
The frequency of a blackbody's emission is influenced by its temperature, where a higher temperature results in emissions of higher frequencies. According to radiation laws, as a blackbody gets hotter, it will radiate electromagnetic waves more intensely, and the peak of its emission curve will move towards shorter wavelengths, which correspond to higher frequencies. Therefore, while the frequency of emitted radiation increases with temperature, it does not double when the temperature is doubled because the relationship between temperature and frequency is not linear.
Seeing this in everyday life, a burner on a stove glows dull red at low temperature and brightens to orange-red at higher temperatures, emitting radiation at shorter wavelengths (higher frequency and energy). This exemplifies that hot objects radiate energy at shorter wavelengths, verifying that higher temperature indeed influences the blackbody radiation to shift towards higher frequencies.