1. Electromagnetic Spectrum

2. The colors we see only represent a small portion of the electromagnetic spectrum The colors we see only represent a small portion of the electromagnetic spectrum

4. In order from the shortest wavelength to the longest wavelength: In order from the shortest wavelength to the longest wavelength:

5. Gamma Rays: Gamma Rays: Shortest wavelength Shortest wavelength High Frequency High Frequency High Energy High Energy Used to kill cancer cells Used to kill cancer cells

6. X Rays: Used to take pictures of bones and teeth X Rays: Used to take pictures of bones and teeth

7. Ultraviolet(UV) Rays: Ultraviolet(UV) Rays: Emitted by sun Emitted by sun Can cause our skin to burn Can cause our skin to burn

8. Visible Light Waves: Visible Light Waves: The only part of the spectrum that we can see with our eyes The only part of the spectrum that we can see with our eyes Violet is shortest wavelength Violet is shortest wavelength Red is the longest wavelength Red is the longest wavelength The color we see is being reflected while the other colors are absorbed The color we see is being reflected while the other colors are absorbed

9. Infrared Waves: Infrared Waves: Found in lasers Found in lasers Body emits infrared waves, which allows night vision goggles to work Body emits infrared waves, which allows night vision goggles to work

10. Microwaves: Microwaves: Cooks your food in minutes Cooks your food in minutes

11. Radio Waves: Radio Waves: Emitted from radio stations and picked up by your antenna Emitted from radio stations and picked up by your antenna Stars and other gases in space emit these also, so we can see what they are made of Stars and other gases in space emit these also, so we can see what they are made of

12. All electromagnetic waves travel at the same speed in empty space: All electromagnetic waves travel at the same speed in empty space: 3 X 10 8 m/s (186,000miles/second)