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Why Does Lightning Always Come Before Thunder?

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30 Answers

Kath Senior Profile
Kath Senior answered
During a storm, there is a discrepancy between areas of air between regions of warm and cold. This causes frictional forces to build up, which sometimes creates an electrical spark. This is lightning.

At the same time, sound energy is produced by the friction between the different regions of air. This is heard a few seconds later as a clap of thunder. Thunder always follows along a little later because light travels faster than sound.

The speed of light in air is 299,792,458 metres per second (or 1,079,252,848.8 km h-1). The speed of sound in air is At sea level, at a temperature of 15 C (59  F) and under normal atmospheric conditions  is 340 m s-1 (1225 km h-1or 761 mph).

The electrical discharge created by a bolt of lightning can be very destructive and it can kill. When caught outside in a storm, it is a good idea not to act as a lightning conductor ~ crouch down away from trees at the bottom of a slope if there is no shelter. But there is no need to cover your ears ~ the thunder is completely harmless.
Anonymous Profile
Anonymous answered
Lighting goes before thunder because the light waves travel faster than sound waves
Mark Profile
Mark answered
Actually they happen at the same time but light travels faster than sound so you see lightning before you hear thunder. The farther away you are from the event the longer the separation will be.
James Schaaf Profile
James Schaaf answered
The reason that you see lightning before you hear the thunder is that light travels at a greater speed then sound.
Anonymous Profile
Anonymous answered
Lightning comes before thunder in a way, the speed of light, the lightning comes before the speed of sound, the thunder.  Once lightning occurs, the thunder will ALWAYS follow.  There is a sound barrier that covers the earth.  When the lightning breaks it, we see it faster than we hear the thunder.
Anonymous Profile
Anonymous answered
The speed of light is around 180 million miles per second vs sound being around 800 miles per hour. Light will reach you faster than sound will.
Super man Profile
Super man answered
That is bcoz light travels faster than sound in air. .
Anonymous Profile
Anonymous answered
Because light travels faster that sound and that is why lighting comes before thunder.
Bill Profile
Bill answered
Because light travels much faster than sound. The two are simultaneous but you see the light before you hear the thunder.
Anonymous Profile
Anonymous answered
Light travels faster than sound, which means you will see the lightning before the thunder
Anonymous Profile
Anonymous answered
Light travels faster than sound as light can be gas,solid or liquid but the sound is just a type of gas
Anonymous Profile
Anonymous answered
Because the light is faster than the sound.
So the lightning hits first than probably after one struck the thunder struck
Anonymous Profile
Anonymous answered
The lightning comes before thunder because light is as fast as a flash and sound takes afyew seconds.
Anonymous Profile
Anonymous answered
Because light travels faster than sound, the second lightning passes the sound barrier there is a sonic boom, or thunder, therefore proving that thunder is a factor of lightning. Without lightning there is no thunder.

But that was just an explanation the answer is that because light is most probably one of the most fastest things in the world so it comes first
Linh Profile
Linh answered
You hear thunder after Lightning because sound travels faster than light and thunder shocks waves created when a lightning bolt super heats air along its path of travels that's what causes thunder
Anonymous Profile
Anonymous answered
Because the lightning holds so much power that it turns that part of air into nothing. Since there is nothing air rushes into that nothing and creates a sonic boom
Anonymous Profile
Anonymous answered
Thunder is the warning for lightning telling you to get to a safe location before its too late.
JayLee Bull Profile
JayLee Bull answered
The reson why lighting comes befor is because the sound waves come after the light waves! JayLee
Anonymous Profile
Anonymous answered
Me got more creative answer that is eye is infront of ears , so you see light then follow by sound...
Haha..

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