The color of clear sky from the earth appears blue but from the space it appears black. Why?

Class 10th science, Question Paper 2023:The color of clear sky from the earth appears blue but from the space it appears black. Why?

Question :The color of clear sky from the earth appears blue but from the space it appears black. Why?

The correct answer is -The color of the clear sky appears blue from the Earth due to a phenomenon called Rayleigh scattering. The Earth’s atmosphere contains various gases and particles, including nitrogen and oxygen molecules. When sunlight passes through the atmosphere, these molecules scatter the sunlight in all directions, causing the blue light to be scattered more than other colors, giving the sky its blue color.

However, from space, the atmosphere is not visible, so the sky appears black because there is no medium for the scattering of sunlight. The light from the sun is not scattered, and there is no atmospheric interference, which makes the sky appear black.