2. A battery stores
chemical energy.
Chemical energy
Food is stored chemical energy.
This is stored
energy contained
in chemical compounds.
Chemical energy is released during
chemical reactions.

3. Electrical energy
Electric charge travels
through wires in a circuit.
This is energy
produced by the flow
of electric charge.

4. HEAT
Thermal energy
energy transfer
movement of
atoms and
molecules
This is energy which
is released as heat.
Energy transfer. When two
objects at different temperatures
are in contact, heat flows from
the hotter to the colder object.

5. microwaves
Electromagnetic energy
light
This is energy stored
in electromagnetic
waves or radiation.
television waves
radio waves

6. Mechanical energy
This is the combination of
two energies:
• kinetic energy
• potential energy

7. Mechanical energy
The blocks have potential energy.
The falling block has kinetic energy
but is losing its potential energy as
it falls.
The blocks have neither
potential nor kinetic energy.
This is the combination of
two energies:
• kinetic energy
• potential energy
crane

8. Sun
Nuclear energy
energy
The nucleus
splits into two
or more parts.
Nuclear fusion energy
Nuclear fission
The nucleus
joins to
other nuclei.
Nuclear power stationAtomic explosion
This is energy
stored in the
nuclei of atoms.