The sky appears blue because the earth’s atmosphere __________?

Related Mcqs:

1. The blue colour of clear sky is due to_______________?

   A. Reflection of light
   B. Refraction of light
   C. Diffraction of light
   D. Dispersion of light

2. The sun appears red at sunrise and sunset while it appears white at noon, because

   A. Of refraction
   B. It is cooler at sunrise and at sunset
   C. Of diffraction leading to red end of the spectrum reaching the earth.
   D. Of Scattering of light due to dust particles and air molecules.

3. About 50% of the Earth’s crust, including the waters on the Earth and atmosphere, is?

   A. Oxygen
   B. Cabon Dioxide
   C. Silicon
   D. Clay

4. The lowest region of the earth’s atmosphere comes between the earth and stratosphere. what is this region’s name?

   A. Ionosphere
   B. Troposphere 
   C. Stratosphere
   D. Mesosphere

   Submitted by: Ashfaque Ali Khoso

5. Why the colour of the Ocean appears blue?

   A. Because the sunlight falling on it is scattered.
   B. Because the sunlight falling on it is absorbed.
   C. Because the sunlight falling on it is refracted.
   D. Because the sunlight falling on it is reflected.

   Submitted by: Rashid Mehmood

6. The earth’s atmosphere is divided into layers based on the vertical profile of __________?

   A. Air pressure
   B. Air temperature
   C. Air density
   D. Wind speed

   Submitted by: Mansoor Ul Haque

7. The principal constituent of the atmosphere of the Earth is?

   A. Oxygen
   B. Carbon
   C. Hydrogen
   D. Nitrogen

8. Which among the following is the correct sequence of the various layers of the Atmosphere from the Earth’s surface?

   A. Ionosphere, Mesosphere, Stratosphere, Troposphere
   B. Mesosphere, Stratosphere, Ionosphere, Troposphere
   C. Troposphere, Stratosphere, Mesosphere, Ionosphere
   D. Troposphere, Ionosphere, Stratosphere, Mesosphere

   Submitted by: ★ ɪʟʏᴀsɪʟᴜ ★

9. The top atmosphere of the Earth directly reflects back into space nearly what part of the total amount of sun’s energy coming to it?

   A. 10%
   B. 20%
   C. 30%
   D. 50%

   Submitted by: Jameel Ahmed Solangi (Larkana)

10. The coldest region of the Earth’s atmosphere is__________?

    A. Exosphere
    B. Thermosphere
    C. Stratopause
    D. Mesopause

    Submitted by: Fida Ur Rasool