Why Is the Colour of the Clear Sky Blue? And Why Are the Clouds White? Molecules with a larger size than the wavelength of light experience the scattering effect differently; the phenomenon is known as the Mie effect. Due to the largeness of particles, the light appears white. That is why the clouds, which are made of water droplets, are white.

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Blue Sky It is normal to say that the sky appears blue in colour. Have you ever thought about why it appears blue? When sunlight enters the Earth’s atmosphere, it gets scattered by the atmospheric particles. In the spectrum of white light, blue is the colour that has a minimum wavelength. Hence, the blue colour scatters the most and is scattered in all directions by the tiny atmospheric ...

The blue light due to its short wavelength is scattered more than the red light of long wavelength. Thus the light directly from the sun reaching our eye is rich in red colour while the light from all the other directions reaching our eye is the scattered blue light. Therefore the sky in the direction of the sun is blue.

Atmospheric optics is the scientific study and explanation of the unique and stunning optical effects in the sky. It encompasses the principles of physics that help answer common questions like why the sky appears blue, why certain clouds are white while others appear dark, and how rainbows are formed. This article will explore various atmospheric phenomena and will help gain a deeper ...

Why do the stars twinkle? As a star’s light penetrates the Earth’s atmosphere, every individual stream of starlight is refracted – caused to change direction, slightly – by the various temperature and density layers in Earth’s atmosphere. You might think of it as the light travelling a zig-zag path to our eyes, instead of the straight path the light would travel if Earth didn’t ...

Why are clouds white? In a cloud, sunlight is scattered by much larger water droplets. These scatter all colours almost equally meaning that the sunlight continues to remain white and so making the clouds appear white against the background of the blue sky.

Chapter 4 – Why? and Alice in Wonderland Solutions answers the questions related to each and every topic discussed in this chapter. Students can refer to and easily download the PDF of NCERT Class 4 English solutions for free from the links given below.

The path of a beam of light passing through a true solution is not visible. However, its path becomes visible through a colloidal solution where the size of the particles is relatively larger. The topic further discusses the Tyndall Effect – why the colour of the clear sky is blue, and the colour of the Sun at sunrise and sunset.

23. Why is the colour of the clear sky blue? Soln: Blue is the colour in the visible spectrum which is having maximum scattering. This makes the blue colour to reach us and the sky appears blue. 24. What is the difference in colours of the Sun observed during sunrise/sunset and noon? Give an explanation for each.