Answer these questions if you can:
Why is the sky blue? ...
How much does the earth weigh? ...
How far away is the sun? ...
What is a black hole? ...
How do airplanes fly? ...
How do flies walk on the ceiling? ...
How are rainbows made? ...
Are sharks mammals? ...
Answers
Answer:
1.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.Scientists say that Earth weighs around 6 x 1024 kilograms, or 1.3 x 1025 pounds.
3. 150.88 million km
4.A black hole is a region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.
5.Airplanes fly because they are able to generate a force called Lift which normally moves the airplane upward. Lift is generated by the forward motion of the airplane through the air. This motion is produced by the Thrust of the engine(s).
6.Close-up of the tacky hairs and claws on a fly foot taken with an Electron microscope. Each fly foot has two fat footpads that give the insect plenty of surface area with which to cling. ... The adhesive pads on the feet, called pulvilli, come equipped with tiny hairs that have spatula-like tips.
7.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.Sharks are not mammals.
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Blue light is scattered more than other colors because, it travels as shorter, smaller waves.
5.972×10^24 kg
150.88 million km
A black hole is a region of space time where gravity is so strong.
Aeroplane's fly when the movement of air across their wings creates an upward force on the wings that is greater than the force of gravity pulling the plane toward the Earth.
The adhesive pads on the feet, called pulvilli come equipped with tiny hairs that have spatula like tips.
A rainbow is made by sunlight and atmospheric conditions.
No, Sharks are not mammals.