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Enmanuel Garrido<br />
Name ____________________<br />
Go to the web site www.darvill.clara.net/emag<br />
1. Click on “How the waves fit into the spectrum” and fill in this table:<br />
>: look out for the<br />
RED words on the web site!<br />
Low __________, frequency Long wavelength<br />
High frequency, Short ______________<br />
wavelength<br />
Radio Waves<br />
Microwaves Infra-red Visible Light Ultra-violet X-rays<br />
Gamma rays<br />
2. Click on “Radio waves”. They are used for _______________________<br />
communications<br />
3. Click on “Microwaves”. They are used for cooking, mobile _________, Wifi speed _______ cameras cameras and _________. radar<br />
4. Click on “Infra-red”. These waves are given off by _____ hot _________. objects They are used for remote controls,<br />
cameras in police ____________ helicopters , and alarm systems.<br />
5. Click on “Visible Light”. This is used in DVD ___ players and _______ laser printers, and for seeing where we’re going.<br />
6. “UV” stands for “ ________ Ultra ___________”. Violet This can damage the _________ retina in your eyes, and cause<br />
sunburn and even _______ skin cancer. Its uses include detecting forged ______ bank _______. notes<br />
7. X-rays are used to see inside people, and for _________ airport security.<br />
8. Gamma rays are given off by some ________________ radioactive substances. We can use them to kill ________ cancer cells,<br />
which is called R_______________ adiotherapy .<br />
9. My Quiz score is ____%. 100
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