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rainbow(介绍彩虹的英语ppt)
rainbow is a very beautiful natural phenomenon.it has got seven https://www.sodocs.net/doc/728494339.html,ly is red,orange,yellow,green,cyan,blue and purple.
1.A rainbow is an optical
phenomenon in meteorology.
when the sunshine irradiation
the rain in the air.
2.rainbow is a natural
phenomenon.Because the
sunshine irradiation in small
drops of water floating in the
air.Cause by the
reverberation and refraction
of the light.
Rainbow's shape is arch.it looks like the bridge.
Sometimes,the rainbow will has got the phenomenon.
The is two rainbow in the air .
When the moonshine is very intense.Sometimes the rainbow will appear in night.It calls late rainbow.Because at night people are difficult to tell apart.So the color looks like white.
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