• Question: why is grass green?

    Asked by jackibaby to Austin, Kirsty, Nicola, Nike, Sarah on 21 Jun 2012. This question was also asked by josua2k, silas13, jake9, lexy10.
    • Photo: Kirsty Ross

      Kirsty Ross answered on 21 Jun 2012:

      Grass is green as it contains lots of something called chlorophyll. Chlorophyll is found (unsurprisingly!) in chloroplasts, specialised compartments in the cell where the chlorophyll uses red and blue sunlight to combine water and CO2 to produce oxygen and sugar. Chlorophyll is a green pigment as it scatters green light back towards our eyes while absorbing other colours.

    • Photo: Nike Dattani

      Nike Dattani answered on 21 Jun 2012:

      Chlorophyll absorbs all colours of light from the sun, and then reflects the green light back into the sky. It is what is reflected that we see =)

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