Question

why does the sun appear reddish early in the morning ? will this phenomenon be observed by an astronaut on the moon ? give justification of your answer

Answer 1

In the morning, the sun is at the horizon. Sunlight has to travel a long distance through thick layers of air. The colloidal particles in the sky like molecules of air scatter away coulours of shorter wavelengths like blue. So colors of longer wavelengths enter our eye like red. Hence the sun appears reddish during morning.

In the noon, the sun is overhead and sunlight has to travel a relatively shorter distance. Here, the colloidal particles in the sky scatter very little of colors of shorter wavelengths like blue. Hence it appears white.

Hope it helps ya

Answer 2

Sun appear reddish early in the morning because of following reasons:

---->The light rays from the sun travel more distance in atmosphere to reach our eye in the morning and evening times.
--->During sunrise and sunset except red colour all colours will dissappear before they reach us.
---> As red colour has maximum wavelength and scattered less in atmosphere during sunrise and sunset . Hence red colour reaches us.
---> As a result sun appear red in colour during sunrise and sunset time.

The same phenomenon cannot be observed by an astronaut on the moon as there is no atmosphere . The sky looks dark.
because for scattering of light we requires colloidal particles in atmosphere .