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Anonymous asked in Science & MathematicsEarth Sciences & Geology · 2 decades ago

Why is the sky blue?

Anywhere in the world we see the sky blue, has it always been blue? Is there something in the atmosphere that absorbs other wavelenghts? Form space we also see the earth blue (at least a portion of it), does this has something to do with the sky being blue too?

7 Answers

  • 2 decades ago
    Favorite Answer

    The sky is blue due to a phenomenon known as diffuse sky radiation. Diffuse sky radiation is solar radiation reaching the earth's surface after having been scattered from the direct solar beam by molecules or suspensoids in the atmosphere.

    The blue portions of the earth seen from space are of course water. Water exhibits a similar characteristic, where red light wavelengths are absorbed. This effect is only visible with large quanities of water though (like a pool or ocean), however. Water in small quantities (like a glass of water) appears clear.

  • 6 years ago

    Because blue is the lightest of all the colour particles. Blue floats to the top and fills the sky. Every night the blue migrate into outer space and arrive again in the morning. That's why the sky isn't blue at night.

  • 6 years ago

    A clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. When we look towards the sun at sunset, we see red and orange colours because the blue light has been scattered out and away from the line of sight.

  • 6 years ago

    The light from the Sun looks white. But it is really made up of all the colors of the rainbow.

    A prism separates white light into the colors of the rainbow. A prism is a specially shaped crystal. When white light shines through a prism, the light is separated into all its colors.

    Same concept

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  • 2 decades ago

    It has to do with the color prism and uv light. The sun shines through the ozone and the color blue is the one most shown or seen on the prism. It does change at different angles. Watch the sun come up or set and you will see red and orange colors because of the angle changes.

  • 2 decades ago

    cuz once the atomspere and space colids it makes a wierd combanation like the northern or southern lights

  • Anonymous
    2 decades ago

    Coz it is not red

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