Question

Which option justifies that the Sun appears red at sunrise and sunset? *
1 point
(a) red scatters highest by the atmosphere
(b) the distance between the sun and earth reduces
(c) red has high wavelength, so it travels longer distance
(d) the white light disperses into seven
colours, only red enters the atmosphere​

Answer 1

Answer:

(a) red scatters highest by the atmosphere

Thus, there is more probability for shorter wavelength light to get more scattered than for the longer wavelength light. Hence, the Sun (and sunrise and sunset) appears reddish orange during sunset and sunrise. The scattering is also related to the size and quantity of the scattering particles.

Answer 2

The sun appears red at sunrise and sunset because c) red has a high wavelength, so it travels a longer distance.

Explanation:

• Sunlight is made up of all the colors of the visible light spectrum. The light from the Sun travels through Earth's atmosphere.

• The Sun appears red during sunrise and sunset because the rays from the Sun have to travel a longer distance.

• The shorter wavelength light gets more scattered than, the longer wavelength light.

• As light passes through the atmosphere, the shorter-wavelength light (like blue) is scattered more than the longer wavelength light (like red).

• Thus sun appears red in colour during sunset and sunrise.