Before beginning our research
on radio waves, to us, radio waves were just
waves going through the atmosphere, carrying
sound from one place to another. Those were our
ignorant days! We did not realize the complicated
terms and theories involved. In the following
report you will see how we advanced in our
knowledge of radio waves, and we hope it will do
the same for you. Radio waves are a combination
of two kinds of electric vibrations. Audio
frequency waves, which represent voice and other
sounds and radio frequency waves, which carry
audio waves after being combined with them. Two
examples of broadcast waves are AM waves and
FM waves. AM which stands for amplitude
modulation, is a broadcasting method in which the
carrier waves (carry the sounds of a program) are
changed to match changes in the audio frequency
waves. These are electric waves that represent the
sounds of a radio broadcast. FM stands for
frequency modulation and these waves, that go
skyward, are......
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