the energy changes taking place in the devices
below, and draw energy transfer diagrams for each
1) a battery powered torch.
2) a hand generator
powering a bulb.
3) A laptop computer (running from
4) a book falling from a shelf
5) a water balloon thrown upwards
6) a bouncy ball
dropped from a height.
7) a wind-up torch.
8) a pop-up "smiley" toy
Write the name of the device,
and underline it. Draw the arrows using a pencil and ruler. Add labels to show which types of
energy are useful, and which are wasted.
Extension: draw an energy transfer diagram for a toy
or device at home which involves multi-stage energy