Chemical energy (chem-lights and lightning bugs) electricity (through LEDs, fluorescent tubes, neon lights, lasers) and heat (the sun glows from heat, and so do light bulbs)
When lighting a light bulb, it is changed into light and heat/thermal energy.
Any energy - including light - has an associated mass.
Some energy is changed into the desired form. The rest is changed into undesired form such as heat, light, sound, etc.
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Yes, electrical energy can be changed into thermal (heat) energy. Light is electromagnetic energy, and electricity can be changed into light energy. We know that a resistance heater changes electrical energy into thermal energy. An electric range does this, as does an electric space heater. We see electrical energy changed into light in fluorescent lights.
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Light
Heat energy can be changed into other forms of energy such as mechanical energy, electrical energy, or light energy through processes like thermoelectric conversion, thermodynamic cycles, or combustion.
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heat energy. The electrical energy powers the light emission in the bulb, producing both light and heat as byproducts of the process.
Heat to make the filament glow white hot and emit light (electromagnetic radiation).
The electrical energy from the device can be changed into various forms of energy, such as heat energy (through resistance in a wire), light energy (through light bulbs), kinetic energy (through motors), or sound energy (through speakers).