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WHY IS THE SKY BLUE?

WHY IS THE SKY BLUE?

45 month(s) ago on 09/04/2019 @ 09:03 am by Quiblah School, Aleshinloye
Category: Nature and Environment - 946 views | Articles by Author

Article ID: 1554797002 -  Report Article

WHY IS THE SKY BLUE?
Submitted by admin on Sat, 09/29/2012 - 21:06

Student Name / Class:
Chinedu Daudu
On a clear sunny day, the sky above us looks bright blue. In the evening, the sunset puts on a brilliant show of reds, pinks and oranges. Why is the sky blue? What makes the sunset red?
To answer these questions, we must learn about light, and the Earth's atmosphere.

The Atmosphere
The atmosphere is the mixture of gas molecules and other materials surrounding the earth. It is made mostly of the gases nitrogen (78%), and oxygen (21%). Argon gas and water (in the form of vapor, droplets and ice crystals) are the next most common things. There are also small amounts of other gases, plus many small solid particles, like dust, soot and ashes, pollen, and salt from the oceans.
The composition of the atmosphere varies, depending on your location, the weather, and many other things. There may be more water in the air after a rainstorm, or near the ocean. Volcanoes can put large amounts of dust particles high into the atmosphere. Pollution can add different gases or dust and soot.
The atmosphere is densest (thickest) at the bottom, near the Earth. It gradually thins out as you go higher and higher up. There is no sharp break between the atmosphere and space. Learn more about the atmosphere.

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