1. Energy Transformations in devices
describe the energy transformations required in one of the following:
mobile telephone
fax/modem
radio and television

2. Mobile Phones
Sound energy (speak into mouth piece, source)  is converted to electromagnetic energy (microwaves – high frequency radio waves) and is transferred from source to receiver via radio transmitters.  The electromagnetic energy is then transformed back into sound energy by the receiver.

5. Televisions