Science Reject!?

Question

Help im a science reject, stuck on it for 5mins, hurts my brain im in total freeze helps need please.

The temp. of an object affects the PEAK wavelengths that the object emits, Why is it wrong to say that temp. of the object affects the wavelength of EM waves emitted?

Answer 1

A hot body radiates a continuous spectrum, not just one frequency. The frequency (or wavelength) of maximum energy in this spectrum depends on the body's temperature. The first answerer confused characteristic emission lines (e.g., the sodium vapor lamp) with (hot) black-body radiation. The sun's output is a combination of both. The difference, and the black-body spectrum, are explained in the ref. below.
The bottom line is it's not totally wrong to say the temperature affects the radiation frequency, but that's only in a weighted-average sense, since all the frequencies are there. However, that temperature-dependent average is why you see varying degrees of hot-body temperature, ranging from barely visible red, through orange and yellow to white. It's the shifting of the peak that moves the average.

Answer 2

"Heat affect the brigtness of the light emitted, but not the color", is how I restate your question. So only the amplitude is affected, the frequency remains unchanged by heat. For example : Sodium vapor glows with a distinctive yellow color regardless of whether it is in a street lamp, or in part of the sun's light. But the vastly higher temperature (measure of heat) of the sun makes this same yellow light a whole lot brighter.