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?
Answer please!!!!
Answers
1. Blue light is scattered in all directions by the tiny molecules of air in Earth's surface. This is why we see a blue sky.
Explanation:
1) Why is the sky blue?
Ans. 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) Why does the moon appear in the daytime?
Ans. 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?
Ans. Our atmosphere weighs 12,107,415,343,900,000,000 pounds.
According to meteorologists, water vapor averages 0.04% of the volume of Earth's atmosphere. That means the sky holds 4,824,146,196 gallons of water.
4) How much does the Earth weigh?
Ans. 5.972 × 10^24 kg
5) How do airplanes stay in the air?
Ans. Four forces keep an airplane in the sky. They are lift, weight, thrust and drag. Lift pushes the airplane up. The way air moves around the wings gives the airplane lift.
6) Why is water wet?
Ans. Water is wet because when something is wet, it has water on it and on a molecular level, water molecules are bonded on top of each other, therefore water is wet.
7) What makes a rainbow?
Ans. A rainbow is caused by sunlight and atmospheric conditions. Light enters a water droplet, slowing down and bending as it goes from air to denser water. The light reflects off the inside of the droplet, separating into its component wavelengths--or colors. When light exits the droplet, it makes a rainbow.
8) Why don't birds get electrocuted when they land on an electric wire?
Ans. 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.
"hope this helps!"