Energy cannot be created or destroyed but it can be transferred, dissipated or stored in different ways.
Part of Combined ScienceEnergy
A candle
Chemical energy \(\rightarrow\) light energy.
There is wasted heat energy as the candle burns.
A microphone
Sound energy \(\rightarrow\) electrical energy
A loudspeaker
Electrical energy \(\rightarrow\) sound energy.
There is wasted heat energy as the speaker becomes warm.
A green plant leaf
Light energy \(\rightarrow\) chemical energy.