2. The Electromagnetic Spectrum

3. What is the electromagnetic spectrum? It is the range of wavelengths or frequencies over which electromagnetic radiation extends.

4. Term - Wavelength The length of one wave.

5. The wavelength determines the type of electromagnetic energy.

6. Parts of the Electromagnetic Spectrum NameHow They’re Made UsesDangers Gamma RaysGiven off by stars and some radioactive material. Kill cancer cells. Cause cell damage and mutations.

7. Parts of the Electromagnetic Spectrum NameHow They’re Made UsesDangers X-raysProduced by stars and special machines designed to produce x- rays. To see inside people and things. Can cause cell damage and cancer.

8. Parts of the Electromagnetic Spectrum NameHow They’re Made UsesDangers Ultraviolet Rays By special lamps or given off by stars. Sun tan booths, kill microbes, cause body to produce Vitamin D. Damage eyes, produce sunburns, cause cancer

9. Parts of the Electromagnetic Spectrum NameHow They’re Made UsesDangers LightProduce by anything hot enough to glow. See things.Too much light can damage the retina.

10. Parts of the Electromagnetic Spectrum NameHow They’re Made UsesDangers InfraredGiven off by hot objects. Remote controls, heal the body, used in alarm systems, thermal imaging. Cause cell damage and mutations.

11. The Infrared ZooThe Infrared Zoo.

12. Parts of the Electromagnetic Spectrum NameHow They’re Made UsesDangers MicrowavesProduced by a transmitter. Cook foods, mobile phones, radar. Cause cataracts, affect parts of brain.

13. Parts of the Electromagnetic Spectrum NameHow They’re Made UsesDangers Radio waves Transmitters.CommunicationMay cause cancer.

14. Parts of the Electromagnetic Spectrum NameHow They’re Made UsesDangers Radio waves Transmitters.CommunicationMay cause cancer.

15. High Frequency Low Frequency

16. The Presentation Ends Here.