| Example |
Energy
change |
| 1
A battery in a circuit with a bulb |
Energy
is stored in the battery. It is transferred by the electrical current to
the bulb which gets hot. It then transferred by radiation out into the
surroundings. |
| 2
Winding up a clockwork toy car then letting it go |
|
| 3
Using a steam engine to drive a dynamo and light up a lamp |
|
| 4
A plant growing |
|
| 5
Turning a hand-driven dynamo to make a lamp light |
|
| 6
A ball rolling down a ramp |
|
| 7
Using an electric kettle to boil some water |
|
| 8
An electric motor lifting a load off the floor |
|
| 9
An electric bell |
|
| 10
A hot cup of water cooling down |
|
| 11
An electric motor turning a flywheel, then using the moving flywheel to
drive a dynamo and light a lamp |
|
| 12
Speaking into a microphone connected to an amplifier and a loudspeaker |
|
Teaching about energy