Lightning is very hot, about 27760 degrees Celsius. When the lightning heats the air around it , the air instantly expands, resounding with a shock wave.
The clap is an indication of how close you are to the lightning strike, a sharp bang means you are very close ( the sound will come almost immediately after the strike or at the same time), if you are farther away it will sound like a rumble as the sound waves bounce off the geographical features on its way to you ( the thunder will come several seconds later than the lightning strike )
As kids we used to count the seconds that it took for the thunder to resound after a lightning strike to tell how far away it was, one second for one mile
Because sound travels slower than light
Thunder
condensation creates thunder clouds.
More thunder would be caused by more lightning.
Lightning occurs very slightly sooner, and causes thunder.
hummidity winds, thunder, lightning, winds
Thunder claps.
Yes, the noun thunder is a mass noun. Multiples of thunder are expressed as the object of a preposition (a lot of thunder, claps of thunder, rolls of thunder, etc.), or using an adjective (loud thunder, rumbling thunder, deafening thunder, etc.)
If you count the number of seconds from when you see the flash of lightening to when you hear the thunder, you will have a rough estimate as how far the storm is.
Did you mean 'what causes thunder'. I will say the answer for that question. It is actually the lightning that causes thunder. Lightning causes thunder by super-heating a small area of air which then causes an electric current. According to my knowledge, this is the answer for your question.
Thunder
lighting comes before thunder because it is the heat of lighting that causes thunder
120 claps
The Thunderstorm loud claps of thunder lights are rushing all about a storm is coming
the large obstacles and tall buildings etc causes the reverberation of thunder as it reflects sound and also causes multiple reverberation.
condensation creates thunder clouds.
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