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प्रश्न
Why does sun appear red at sunrise and sunset?
Why does the Sun appear red at sunrise?
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उत्तर
- At sunrise or sunset, the Sun and its surroundings appear red due to light scattering.
- At the time of sunset or sunrise, the light rays from the sun have to travel a long distance to reach our eyes through the Earth’s atmosphere.
- In other words, we can say that when we look towards the horizon, we are looking through more of Earth’s atmosphere than when we look overhead.
- The light reaching our eyes is rich in red colour, as blue light is largely scattered by the particles in Earth’s atmosphere.
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संबंधित प्रश्न
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.
With the help of a labelled diagram, explain why the sun appears reddish at the sun-rise and the sun-set.
Name a natural phenomenon which is caused by the dispersion of sunlight in the sky.
What colours make up white light?
How many colours are there in a full spectrum of white light? Write the various colours of spectrum in the order, starting with red.
Which phenomenon makes us see the sun:
a few minutes after actual sunset?
The colour of sky, in direction other than of the sun, is blue. Explain.
The clouds are seen white. Explain
Blue litmus is added to two test tubes A and B containing dilute HCl and NaOH. Answer respectively. In which test tube a colour change will be observed? State the colour change and give its reason.
The colour of clear sky from the earth appears blue but from the space it appears black. Why?
