1. By Rachel Cook

2.  Radio waves control a vast amount of modern
day technology, such as wireless networks and
television.
 In the electromagnetic spectrum radio waves
have the longest wavelength and can vary
rapidly in size.
 They are measured in hertz and consist of
nothing more than electric and magnetic
fields, they continuously recreate each other as
they travel through space.
 The frequencies can vary from 3kHz to 300GHz

3.  Radio waves are important for many other items
other than communication such as everyday
household items like mobile phones and even
garage door openers
 Radio waves are responsible for almost instant
communications over far distances such as
overseas.
 They are also responsible for almost all non
written communications.

4.  Television broadcasts
 Wi-Fi
 Phones
 Radio
 AM and FM broadcasters
 Police radios
 Garage door openers
 Satellite Navigations

5.  This is a diagram showing different wavelengths that are covered on the
electromagnetic spectrum. They range from FM wavelengths to gamma
rays. Gamma rays and x rays have the shortest wavelengths and as you
move to the right the wavelengths increase. In the centre is the visible
light, radio waves don’t fit in this range and therefore are not visible to
the human eye.

6. How the radio waves are used?
 Mobile phones use radio waves, the sit next to
FM radio waves on the electromagnetic
spectrum.
Advantages
 The radio waves can travel overseas making
communication really easy.
Disadvantages
 radio waves increase activity in the brain and
the radiation emitted could be harmful.

7.  http://uncyclopedia.wikia.com/wiki/File:Electromagnetic
_spectrum_US_customary.png
 http://www.knowyourmobile.com/samsung/samsunggalax
ymini/galaxyminireviews/891145/samsung_galaxy_mini_re
view.html
 http://www.howstuffworks.com/search.php?terms=radio+
waves
 http://science.hq.nasa.gov/kids/imagers/ems/radio.html
 http://kicp.uchicago.edu/education/explorers/2002summ
er-YERKES/pdfs-sum02/background.pdf
 http://scififreaks.wordpress.com/2011/03/11/are-cell-
phones-bad-for-you/