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Why does the sky changes colour in different periods of time?
- Sia Ming Shuan (age 11)
Tampines North Primary School, SIngapore
The sky is different colors at different times partly because different
amounts of various dust particles, industrial pollutants etc get swept
up into the air at different times. Also, in the morning and the
evening the sunlight travels through more of the atmosphere on its way
to us, so you see more scattring not only from all that variable stuff
but also from the air itself, which mainly scatters blue light. This
website offers more detail:
(published on 10/22/2007)
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