What is the difference in colours of the Sun observed during sunrise/sunset and noon? Give explanation for each.
The sky appears reddish during sunrise/sunset but it appears white at noon. During noon, the sunlight has to travel less distance to reach us. Most of the colours reaching us get scattered. Due to this, Sky appears white at noon. Colours near the red end of the spectrum scatter the least. During sunset, and sunrise, sunlight needs to travel more distance to reach us. Red colour is able to reach us because it is scattered the least. Hence, sky appears reddish during sunrise/ sunset.