Electrical energy is transformed to magnetic energy, which is transformed to mechanical energy (striker hitting the bell) which is transformed to sound when the bell rings.
Mechanical energy from the person pushing the button is converted into electrical energy, which activates the doorbell mechanism. The electrical energy then produces sound energy as the bell rings.
Photosynthesis. - the transformation of light energy into chemical energy.
hydrogen fusion
fire energy
electrical to sound
When coal is burnt, the energy transformation that occurs is from chemical energy stored in the coal to thermal energy in the form of heat, which can be used to generate electricity or heat for various applications.
electical energy is transform to heat energy
chemical
electrical to heat and mechanical
"photosynthesis"
The energy transformation that occurs when snow is melting is thermal energy being transferred to the snow from its surroundings, causing the snow to absorb heat and change from a solid to a liquid state.