Section C: Give a long answer to the question given below.
 
1Explain why the Sun takes on a reddish colour in the early morning.
 
The sun is  the horizon during sunrise and sunset. As a result, the light from the sun passes through  of air and covers a  distance before reaching our eyes. The  is mostly scattered and the  colour reaches us. This gives the  to the sun at sunrise and sunset. The light form the sun travels  during the noon. Most of the colors get scattered and this is the reason why sun appears  in color.
 
2. Why do astronauts observe darkness in the sky instead of the usual blue colour?
 
The sunlight  as there is  in outer space, so the sky appears  instead of blue to an astronaut. The eyes of astronaut’s light as the sunlight is , due to this sky appears black to them.