IGCSE Physics Worksheet 15.1 [PDF]

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Worksheet 15.1 Electromagnetic spectrum The electromagnetic spectrum includes seven types of radiation. What do you know about how they are produced, detected and used? Name each type of electromagnetic radiation described below. 1 Detected by our eyes. 2 Given out by very hot objects (three types). 3 Given out by radioactive substances. 4 Used to show up broken bones. 5 Used in a TV remote control. 6 Used for broadcasting TV signals. 7 Has longer wavelengths than microwaves. 8 Used in airport security systems. 9 Used to cook food (two types). 10 Used in satellite communications. 11 Has a range of frequencies between X-rays and visible light. 12 Used in invisible beams in security systems. 13 Used for photographing friends. 14 Travel from the Sun to the Earth’s surface (three types). 15 Used to send signals to mobile phones.



© Cambridge University Press 2014 Worksheet 15.1  1



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