Communication - Present
Telephone
The telephone allows two people, anywhere in the world to talk with each other. Your voice waves make a metal disk vibrate and then it sends a signal down a wire to a telephone tower. The telephone tower then sends radio waves to another telephone tower. The message is sent through a wire to the other telephone and makes the metal disk in the other telephone vibrate and it sounds just like a voice.
Morse code
Morse code is a series of dots and dashes that make a message.
Radio
A radio is a lot like a telephone but it sends radio waves from a mechanism inside itself.
These are very important forms of communication.
Rob
Yarra Valley Grammar
