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How Snow Is Made?

We all agree that the snowfall is always fascinating. In the snowfall, all people stay out of the house and play with snow. People can make giant snowmen, trample along the snow, or play snowballs with their families. However, are you curious how snow is made?

Snow is water droplets falling from the clouds. These droplet waters then become solid and create snow. It happens because rain consists of water vapor particles and being cooled in the air.

Snow happens when water vapor piled up in the earth’s atmosphere freezes. It happens before they turn into water droplets. This process occurs when the temperature in the cloud becomes very frigid.

Snowflakes are created by crystals of ice which have established around a little filth in the air. They then  grow from small forms into the big one. The form of snowflakes are varied. They can consist of 200 crystal maximum.

How Does Covid-19 Spread?

People in the world are shocked with the emergence of covid-19. This virus becomes a pandemic which has contaminated people all around the world. What is Covid-19? Covid-19 is a very infectious disease caused by a new kind of coronavirus. Is it dangerous? How can it spread to humans?

Firstly, the virus is supposed to spread primarily from person-to-person. These viruses can spread between persons who are in contact approximately in about 6 feets.

Secondly, covid-19 can also range via respiratory dewdrops produced while an infected person coughs or sneezes. These drops can land in the noses or mouths of persons who are nearby. Or they can feasibly be inhaled to the lungs.

Thirdly, it is spread by any human interaction with infected objects or surfaces. It may be likely that a person can catch up COVID-19 by touching objects devouring the virus. Then they drop the virus to their own nose, mouth, or eyes.How easily a virus blowout from person-to-person can vary. These viruses are highly spreadable. Therefore, we have to be alert and keep following health protocol.


How Plane Can Fly?

Now, almost everyday we see planes are flying above. Inside, there are hundreds of people sitting, walking, even running. Have you ever wondered why such a heavy metal object can float so freely in the air? How can the airplanes fly like birds?

Do you know that airplanes can generate energy? That is why this object can fly, because of the force. Such a force, scientifically called as Lift, can move an airplane upward. How come?

There are mainly four forces which contribute to fly an airplane. They are Weight, Thrust, Drag and Lift. How do those work? First, to move an airplane forward, the Thrust created by the engines must be greater than the force produced by the air resistance called as Drag.

Second, to move the airplane upward, it needs enough forward motion. The airplane can only fly if the force of Lift is much greater than in Weight. This process can push an airplane to fly.








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