Filament in a lightbulb does not burn, but glows. If air (oxygen) gets into the bulb of a lightbulb, the filament will burn out.
Prior knowledge & experience:
What happens to a wire when electricity passes through it?
Why are lightbulbs sealed?
Lightbulbs are sealed to keep the filament from burning out.
Steel wool cannot burn. The wire in a light bulb will not burn. The glass bulb is there only to spread the light out in all directions.
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