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Q & A: Paint the Sky

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Most recent answer: 10/22/2007
Q:
Why does the sky changes colour in different periods of time?
- Sia Ming Shuan (age 11)
Tampines North Primary School, SIngapore
A:
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

(published on 10/22/2007)

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