Energy cannot be
or
.
Any process involves energy from
one form to another.
A moving object has energy. An
object on a high shelf has energy.
If the object falls, this energy is converted into
energy, and will end up as
and
energy when the object hits the
floor.
A stretched rubber band stores mechanical ""
energy, a battery stores energy,
which is released as energy when a
current flows.
Microphones convert into
electrical energy, whereas loudspeakers change
energy into sound.
Lamps convert electrical energy into heat and
,
cells convert light into
electrical energy.
