Presentation on theme: "1.What do all of the waves in the electromagnetic spectrum have in common? A.Their wavelength B.Their frequency C.Their speed D.Their energy 2. What is."— Presentation transcript:
1.What do all of the waves in the electromagnetic spectrum have in common? A.Their wavelength B.Their frequency C.Their speed D.Their energy 2. What is the only type of wave that can be seen by humans?
*Which wave has more energy, x-ray or visible light? How do you know this? *Which wave has higher frequency, ultraviolet or microwave? How do you know this?
Visible light is the only EM wave that humans can see. How is it created? The sun can provide it naturally. Humans can make it artificially with light bulbs.
Visible light is composed of 7 colors. The 7 colors that make up visible light are: – Red, Orange, Yellow, Blue, Green, Indigo, Violet (ROYGBIV) They go from longest wavelength to shortest wavelength.
When we see just one color, we see the color that is reflected back to our eyes. The other colors are absorbed by that object. When these 7 colors are combined, we see white light! When all of the colors are absorbed, we see black For example: Shirt Shoes
When visible light is refracted (bent), we see all 7 colors in order (ROYGBIV)
1. What color is your desk? – What colors are reflected – What colors are absorbed 2. What color is the MVP bulletin board? – What colors are being reflected? – What colors are being absorbed? 3. What color are the dry erase boards? – What colors are being reflected? – What colors are being absorbed? 4. How can we see all the colors at once in nature?
5. When white light is refracted, what will the order of the colors be?
6. Which color has a longer wavelength, orange or blue? 7. Which color has a higher frequency, yellow or violet?
Answer the questions on the worksheet Raise your hand if you are stuck! This is homework if not finished!
1.The 7 colors of visible light are arranged according to their A.Brightness B.Wavelength C.Speed D.Color 2. List the colors of the visible light spectrum in order from longest wavelength to shortest wavelength. 3. Which color has a higher frequency, orange or blue?
4. A leaf is green. What does that tell you about the light that is being absorbed? A.The light is a UV ray B.The light is not a part of the light spectrum C.All colors are reflected except green D.All colors are absorbed except green 5. What color is an object that absorbs all of the colors of the light spectrum? A.A rainbow B.White C.Black D.Invisible