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?
pls help
Answers
Answer:
here is the answer:-
6.If we define "wet" as "made of liquid or moisture", then water is definitely wet because it is made of liquid, and in this sense, all liquids are wet because they are all made of liquids. I think that this is a case of a word being useful only in appropriate contexts.
Explanation:
Answer:
Why is the sky blue?
As white light passes through our atmosphere, tiny air molecules cause it to 'scatter'. The scattering caused by these tiny air molecules (known as Rayleigh scattering) increases as the wavelength of light decreases. Therefore, blue light is scattered more than red light and the sky appears blue during the day.
Why does the moon appear in the daytime?
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."
How much does the sky weigh?
How much does air weigh? This means the sky weighs 14.7 lbs per square inch of earth surface which is roughly 11 billion billion pounds. So, you can say that sky weighs one millionth of the mass of the Earth.
How do airplanes stay in the air?
A plane's engines are designed to move it forward at high speed. That makes air flow rapidly over the wings, which throw the air down toward the ground, generating an upward force called lift that overcomes the plane's weight and holds it in the sky.
Why is water wet?
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.
What makes a rainbow?
A rainbow is a multicolored arc made by light striking water droplets. The most familiar type rainbow is produced when sunlight strikes raindrops in front of a viewer at a precise angle (42 degrees).Light entering a water droplet is refracted. It is then reflected by the back of the droplet.
Why don't birds get electrocuted when they land on an electric wire?
We know that the electric lines carry a constant voltage supply across the power lines. Therefore, the potential difference across the claws will be negligible or zero. Thus, the current will not flow through the bird and hence they will not be electrocuted.