Why is the sky blue?
Why does the moon appear in the daytime?
How much does the sky weigh?
How much does the Earth weigh?
How do airplanes stay in the air?
Why is water wet?
What makes a rainbow?
Why don't birds get electrocuted when they land on an electric wire?
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Answers
Answer:
1) Why is the sky blue?
Answer : The sky is blue due to a phenomenon called Raleigh scattering. This scattering refers to the scattering of electromagnetic radiation (of which light is a form) by particles of a much smaller wavelength. ... These shorter wavelengths correspond to blue hues, hence why when we look at the sky, we see it as blue.
2) Why does the moon appear in the daytime?
Answer : We can see the moon during the day for the same reason we see the moon at night. The surface of the moon is reflecting the sun's light into our eyes. ... "When we see the moon during the day it's because the moon is in the right spot in the sky and it's reflecting enough light to be as bright, or brighter, than the sky."
3) How much does the sky weigh?
Answer : 12,107,415,382,493,169,564 pounds , That means the sky holds 4,824,146,196 gallons of water. At eight pounds per gallon, that's another 38,593,169,564 pounds of water in the air. Add it all up, and the total weight of our sky is 12,107,415,382,493,169,564 pounds, more than 12 quintillion pounds!
4) How much does the Earth weigh?
Answer : 5.972 × 10^24 kg
5) How do airplanes stay in the air?
Answer : Four forces keep an airplane in the sky. They are lift, weight, thrust and drag. ... The way air moves around the wings gives the airplane lift. The shape of the wings helps with lift, too.
6) Why is water wet?
Answer : Water is wet, in the sense of being a liquid which flows easily, because its viscosity is low, which is because its molecules are rather loosely joined together.
7) What makes a rainbow?
Answer : Sunlight appears white. When sunlight hits a rain droplet, some of the light is reflected. The electromagnetic spectrum is made of light with many different wavelengths, and each is reflected at a different angle. Thus, spectrum is separated, producing a rainbow.
8) Why don't birds get electrocuted when they land on an electric wire?
Answer : Basically… Electricity flows by the movement of electrons through conductors. ... If a bird perches on a wire with two feet there is no motivation to go through the birds' body (no lower voltage path to flow to) so electrons choose the path of least resistance and continue to flow along the wire.
Explanation:
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