1. There are 7 different types of electromagnetic wave.
Can you guess them…?

2. Television & radio signals, remote controlled toys, "walkie talkies".
Candles, torches, LEDs, lightbulbs, illumination, lasers, optics, vision.
Security markers, forensic science, forgery detection, the Sun, sun-beds.
Remote controls, cooking food, warm objects, fires, heaters, thermal imaging.
Broken bones, airport luggage scans.
Heating food, mobile telephones, wireless internet, bluetooth.
Nuclear radiation, mutations, The Incredible Hulk.

3. Television & radio signals, remote controlled toys, "walkie talkies".
Remote controls, cooking food, warm objects, fires, heaters, thermal imaging.
Heating food
mobile telephones, wireless internet, bluetooth.

4. Candles, torches, LEDs, lightbulbs, illumination, lasers, optics, vision.
Security markers, forensic science, forgery detection, the Sun, sun-beds.
Broken bones, airport luggage scans.
Nuclear radiation, mutations,
The Incredible Hulk.