1. Why the Sky is Blue By Natalie Schafer

2. Introduction This power point presentation will strech your minds to the SKY with knowledge as to why the sky is blue. Other Biggie QuestionsOther Biggie Questions Mrs. Peck’s Physic HomepageMrs. Peck’s Physic Homepage Have you ever wondered why the sky is blue? I was curious as to why the sky was blue opposed to any of the other colors on the visible spectrum. Why not orange? Or purple?

3. Science Visible LightVisible Light, also known as white light, is the only part of the electromagnetic spectrum that can be seen by the human eye. electromagnetic spectrum White light White light has all the colors of the visible spectrum. The colors are red, orange, yellow, green blue, indigo and violet, abbreviated as Roy G. Biv. All of these colors can be shown when sunlight passes through a prism it separates the light into distinctive colors. Human ’ s vision responds more to green, red and blue wavelengths All the colors combined together form white light.

4. Newton He placed a triangle shaped prism in front of a beam of sunlight. On the other side of the prism showed the full color spectrum. Isaac Newton was the first to discover the color spectrum

5. Light Scatters The scattering of sunlight causes the blue color of the skyscatter The Nitrogen and Oxygen atoms in the atmosphere have an effect on sunlight which scatters through them The wavelength of the light is much larger than the particles it scatterswavelength Out of the three colors that respond most to the human eye; red, green and blue, blue has the longest wavelength

6. Vocabulary Visible Light- The part of the electromagnetic spectrum that your eyes can see Scatter- To absorb sound or light and redirect the sound or light in all directions Frequency- The number of repetitions per unit of time of a light wave Wavelength- The distance between one peak or crest of a wave of light and the next corresponding peak or crest Rayleigh Scattering- The scattering of electromagnetic radiation by particles, resulting in the separation of colors in the color spectrum Electromagnetic Spectrum- A full range of frequencies

7. Graph I asked 20 adults if they knew what caused the sky to be blue. This was there response

9. Related Links The following sites were used to learn as to why the sky is blue. How Stuff Works - This website was great for an introduction of the concept as to why the sky is blue.How Stuff Works Hyper Physics - This site gave me a detailed explanation to Rayleigh and Mie ScatteringHyper Physics Usenet Physics FAQ - This site gave simple explanations to help gain a better understanding of the informationUsenet Physics FAQ Wikipedia - This site gave me a greater understanding of Rayleigh’s scatteringWikipedia Biggie Questions Mrs. Peck’s Physics Homepage