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Questions
Explain giving reason why the sky appears blue to an observer from the surface of the earth? What will the colour of the sky be for an astronaut staying in the international space station orbiting the earth? Justify your answer giving reason.
Why does the sky appear dark instead of blue to an astronaut?
The sky appears blue to an observer from the surface of the Earth. Explain its reason. How does the sky appear, during the day, to an astronaut staying in the international space station orbiting the Earth? State reason to justify your answer.
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Solution
Sunlight reaches the Earth's atmosphere and is scattered in all directions by the gases and particles in the air. Blue light is scattered more than the other colours because it has the shortest wavelength. This is why the sky appears blue to an observer from the surface of the Earth.
For an astronaut staying in the international space station orbiting the Earth, the colour of the sky will be black because the light reaching it does not scatter.
RELATED QUESTIONS
With the help of scattering of light, explain the reason for the difference in colours of the Sun as it appears during sunset/sunrise and noon.
Which color of white light is scattered the least and why?
Which phenomenon makes us see the sun:
a few minutes after actual sunset?
What is the colour of the sunlight scattered by the air molecules in the atmosphere?
The red colour of the sun at the time of sunrise and sunset is because:
(a) red colour is least scattered
(b) blue colour is least scattered
(c) red colour is most scattered
(d) blue colour is most scattered
In an experiment to study the scattering of light by passing a beam of white light through a colloidal solution of sulphur in a transparent glass tank:
Which colour is observed from the front of the glass tank? Does this colour correspond to the colour of sky on a clear day or the colour of sky around the sun at sunset?
In white light of sun, maximum scattering by the air molecular present in the earth’s atmosphere is for ______.
Explain in brief the reason for the following :
Advanced sunrise
A beam of blue, green, and yellow light passes through the earth's atmosphere. Name the colour which is scattered the least.
In the atmosphere which colour of light gets scattered the least?
