What is Some natural phenomena write summary
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A Natural Phenomenon is anything that occurs on its own in nature without any kind of human intervention.
For example, the weather of a place, fog, storms, winds, tides, volcanic eruptions and cyclones all can be categorized as natural phenomena.
Some natural phenomena can be destructive such as cyclones, thunderstorms, lightning and earthquakes.
However, there are some ways with which we can protect and prepare ourselves from these natural disasters.
Lightning
Lightning is an electric discharge or an electric spark that occurs in nature on a major scale. It is caused by the accumulation of charges in the clouds.
It can be deadly and cause the destruction of life and property.
In ancient times people were unaware of the cause of lightning and hence they were scared of it. Nowadays, scientists have evolved some precautions that can help us prepare and protect ourselves from this natural phenomenon.
The sparks that Greeks knew about
The Greeks were already aware of the electric charges from 600 BC. They knew that when Amber (a type of resin or synthetic polymer) and fur are rubbed together, then amber can attract light objects like hair.
Similarly, woollen clothes or polyester clothes also attract hair and can produce a little spark or crackling sound when they are taken off from the body. This is because of electric charges.
Benjamin Franklin was an American scientist who in 1752 discovered and proved that lightning and spark produced from these clothes are all same things.
We know that every atom comprises of subatomic particles such as electrons, protons and neutrons.
All these particles share a common property that they carry electric charges.
Electrons have a negative charge on them while protons have a positive charge.
We know that atoms carry a balanced charge however these charges may sometimes become out of order.
An object will be called electrically neutral if it is carrying a balanced proportion of positive and negative charges.
An object is called a charged object if there is an imbalance of electrons and protons in it.
Charging by rubbing
When we rub two objects with each other they get charged due to a transfer of electrons between them.
For example, if we rub a rubber balloon with animal fur, the balloon is made up of rubber attracts the electrons from the animal fur.
This results in rubber having an excess of electrons while fur having a shortage of electrons.
In the same way, if we rub a plastic comb with dry hair the comb acquires some charge.
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