[00:03.410]The cause of thunder has been a subject of discussion for a long time.
[00:08.780]In the third century BC, it was believed that thunder is caused due to collision of clouds .
[00:16.740]However, the most accepted theory was developed in the 20th century.
[00:22.140]According to this theory, the bolts of lightning are very hot, much hotter than the surface of the sun.
[00:29.910]When this high temperature bolt hits the surrounding air,
[00:33.530]there is an instant expansion of the air, sending out a shock wave, which we hear as a sound of explosion.
[00:42.030]Thus, thunder is caused due to rapid heating and cooling of the air , near the stroke of lightning Thunder can be dangerous.
[00:51.630]In case that you are outside during a thunderstorm,
[00:55.630]it is advisable to avoid open fields, beaches and lakes and also stay away from tall trees.
[01:04.370]The safest way is to get inside your home or stay in the car.

The cause of thunder has been a subject of discussion for a long time.
In the third century BC, it was believed that thunder is caused due to collision of clouds .
However, the most accepted theory was developed in the 20th century.
According to this theory, the bolts of lightning are very hot, much hotter than the surface of the sun.
When this high temperature bolt hits the surrounding air,
there is an instant expansion of the air, sending out a shock wave, which we hear as a sound of explosion.
Thus, thunder is caused due to rapid heating and cooling of the air , near the stroke of lightning Thunder can be dangerous.
In case that you are outside during a thunderstorm,
it is advisable to avoid open fields, beaches and lakes and also stay away from tall trees.
The safest way is to get inside your home or stay in the car.