• Question: Why is the sky blue?

    Asked by culshawwesttaylor to Ezzy, Sam, Ben, Clare, Mario on 12 Mar 2012. This question was also asked by bioninjas, morrisdougal, woodwardhounsell, clive123, dukeshepherd.
    • Photo: Mario Campanelli

      Mario Campanelli answered on 12 Mar 2012:

      because air absorbs more light in the red part of the spectrum, and emits on the blue

    • Photo: Ben Smart

      Ben Smart answered on 12 Mar 2012:

      The sky is blue because the chemicals in the air only let blue light pass through the air (the light comes from the sun and passes through the air before we can see it).

    • Photo: Elizabeth Pearson

      Elizabeth Pearson answered on 12 Mar 2012:

      All the colours of light come through (that’s why sunlight doesn’t look blue) but the other colours get scattered and absorbed more so there’s slightly more blue and that’s the colour it looks.

    • Photo: Clare Burrage

      Clare Burrage answered on 18 Mar 2012:

      White light that comes from the Sun (and also from our lights and lamps) is actually a mixture of lots of different colours. Light of different colours has different amounts of energy and blue light has slightly more energy than the other colours. This means that more blue light can travel through our atmosphere than any of the other colours (because the particles in our atmosphere get in the lay of the light that wants to travel through it). This makes the sky look blue!