1) Why is the sky blue?
2) Why does the moon appear in the daytime?
3) How much does the sky weight?
4) How much does the Earth weight?
5) How do airplanes stay in the air?
6) Why is water wet?
7) What makes a rainbow?
8) Why don't birds get
electrocuted when they land
on an electric wire?
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Answers
Answer:
1 The Short Answer: Gases and particles in Earth's atmosphere scatter sunlight in all directions. Blue light is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time
2 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 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.
4 5.972 × 10^24 kg
Earth/Mass
5 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 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 Rainbows appear in seven colors because water droplets break sunlight into the seven colors of the spectrum. You get the same result when sunlight passes through a prism. ... The rainbow effect occurs because the light is then reflected inside the droplet and finally refracted out again into the air.
8 The copper in electrical wires is a great conductor. Birds are not good conductors. That's one reason they don't get shocked when they sit on electrical wires. The energy bypasses the birds and keeps flowing along the wire instead.
Explanation:
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Answer:
1) The gases and particles of the atmosphere scatter blue light more than other colours of light. So the sky appears blue most of the time
2) Some days after the full moon night, the moon rises too late in the nights and sets in the day.
7) When white light passes through water drops of the atmosphere just after rain, it scatters into 7 colours thus, making a rain bow.
8) There is no voltage in a single wire, the circuit is incomplete. so birds dont get electrocuted when they land on a wire