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Why is the sky blue?

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Jordan Dylan

on 21 April 2011

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Transcript of Why is the sky blue?

why is the sky blue? The Sky is blue because the sunlight interacts with earth's atmosphere making the sky blue. The sunlight contains waves of varing wave lenghts (the distance between one peak or crest of a wave of light, heat, or other energy and the next corresponding peak or crest) each of which that contain different colours. the atmosphere is made up of air molecules and particles of matter that scatter some of the sun's light as it travels to Earth, especially when the wavelengths are shorter which gives off a blue colour. As the light waves come at us from different angles it makes the sky appear blue. Here is a video of a professor explaining the question, "why is the sky blue?" Here are some pictures of our blue sky. Definition of the sky: the region of the clouds or the upper air; the upper atmosphere of the earth. Basic components of the earths atmosphere is; nitrogen, oxygen, a small amount of argon, neon, helium, krypton,carbon dioxide, water vapor, methane, sulfur dioxide, ozone, and Nitrogen oxides.These are the components of the earth's atmosphere. INTERESTING FACTS Blue light from the sun strikes the air molecules and scatters and our eyes perceive it as blue. Definition of Atmosphere: gases surrounding the earth or any astronomical body. Here is a diagram illustrating how the sky is blue. These are wavelengths which hits the earth's atmosphere causing them to be scattered, making the sky blue.
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