The electromagnetic wave spectrum

There are six types of Electromagnetic waves:
1. Radio Waves:

Broadcasting Waves:They are long wavelengths which are used for carrying signals to antenna's, where they are turned into electric energy, then into sound and pictures.

Microwaves: They have shorter wavelengths and are used for cell phones, radars,and heating food.

2. Infrared ray:

Heat Lamps-They give off heat and some visible light. They are used for keeping food warm, they are also used for heating up a bathroom.

Infrared Cameras-This camera uses infrared rays to take a picture. It shows the the heat of every part of the picture.

3. Visible Light- They are waves that we can see. Visible light comes in many colors. The highest frequency of visible light is purple in color. The lowest frequency of visible light appears red in color. To see the colors you can refract white light with a prism and see all the colors.

4. Ultraviolet Rays- They are length waves shorter then those of visible light and they have a lot of energy. They are used to produce vitamin D, and stopping the growth of bacteria on food. They are used in hospitals to kill bacteria on the equipment. But they are sometimes dangerous and can cause skin cancer if you get exposed too much to the sun.

5. X-Rays- They have more energy than U.V rays and penetrate most matter. A few things it does not penetrate is dense things like bone and lead. Which is why it is often used for making images of bones. They are also used for engineering for looking for small cracks and other things the people might need to fix. They are very more powerful than U.V. rays and can also cause cancer.

6. Gamma rays- Gamma rays produce the highest and shortest waves. They are produced by exploding stars, radioactive substances, and objects in space. They are used for medical need. They destroy cancer cells, help examine the body, and other things.