Energy ______________________________________________________________ 11. The Law of conversion
Figure 6.14 More examples of energy conversionWhen all forms of energy coming out of an energy conversion device are added up, it will be equal to the energy that is put into a device.
Energy output must be equal to the input. This means that energy cannot be destroyed or created. It can only change its form.
In the case of an electric bulb, the electrical energy is converted to light and heat.
Living beings
All organisms need free energy to keep themselves alive and functioning. The source of energy is just one; solar energy.
Only plants use that energy directly.
What the organisms use is chemical energy in the form of foods.
Watch the video in the menu bar to find out more about energy transformation.
Finally, work on the activity you can find in the menu bar as well.