Energy changing form
Definition.
Energy changing form is when energy transfers from one type to another without being created or destroyed.
Key points.
Energy can change from one form to another.
Energy is never created or destroyed.
This is called energy transfer.
Most energy changes end up as thermal energy
Energy Stores.
1. Kinetic energy store.
Energy of movement.
Anything moving has kinetic energy.
Example: running, rolling ball, moving car.
2. Thermal energy store.
Energy of hot objects.
Comes from particles moving faster.
Example: hot tea, fire, warm hands.
3. Chemical energy store.
Energy stored in chemicals.
Released in reactions.
Example: food, fuel, batteries.
4. Gravitational potential energy store.
Energy stored because of height.
Higher means more energy.
Example: book on a shelf, water in a dam.
5. Elastic potential energy store.
Energy stored when something is stretched or squashed.
Example: stretched rubber band, compressed spring.
6. Nuclear energy store.
Energy stored in the nucleus of atoms.
Released in nuclear reactions.
Example: Sun, nuclear power plants.
7. Magnetic energy store.
Energy stored in magnets.
Example: two magnets pulling together or pushing apart.
8. Electrostatic energy store.
Energy stored by electric charges.
Example: balloon rubbed on hair sticking to wall.
Fun fact.
When you clap your hands, the energy changes four times, chemical energy, kinetic energy, sound energy, and thermal energy.