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19 answers

As everyone has said, light travels faster than sound. Sound travels about 600 to 700 mph, depending on altitude, temperature, etc. Light travels at about 670,000,000 mph (i.e., 186,000 miles per second). Thus, light (from the lightning) travels about a million times faster than sound (from the thunder).

A point of clarification...lightning is not created when "clouds strike [with] each other..." Lightning occurs when the electro-static charge between clouds and the ground, clouds and stuff on the ground, or clouds and other clouds builds up to a critical point where the resistance of the air is broken down and a current flows...thereby relieving that charge. The clouds, usually so-called towering cumulus clouds (those big and tall dark mean looking ones), do not strike each other to create lightning.

2007-07-11 05:20:36 · answer #1 · answered by oldprof 7 · 0 1

i donot think when they strike we see lightning the lightining is becuase of the charges the positive pole and negative pole but sorry i dont know how r these formed and the noise is of the air which travels so fast when air is heated during lightening it is because the light produced in clouds make a heat of eight times more than a sun at their place
u can understand by example as if u move a stick so fast and just hit it in air then u will hear a sound of air so is the reason that due to the heat the air travels so fast and thus sound is produced

2007-07-11 05:06:10 · answer #2 · answered by Anonymous · 0 0

Lightning produces a channel of extreme heat (the electrical current is only the width of your thumb, but the light makes it appear wider...due to the intense heating of the air). The heating produces shock waves that spread in all directions, at the speed of sound. Thunder represents the shock waves reaching your ears after the lightning strike is seen.

Hope this helps. If you want more info about lightning (e.g. why sometimes thunder sounds like a single bang, while other times its a slow rumble), or other weather hazards, I offer a public weather course at http://www.storm-prep.com. There's some interesting weather trivia as well on that site, including some for lightning.

2007-07-11 05:17:24 · answer #3 · answered by Pete W 2 · 0 0

There are two kinds of lightning. One is a diffused discharge called silent discharge, which does not produce any sound. The other is the more dramatic jagged, forked, bright bolt that is very brief. The air in the path of the bolt gets super heated and moves away. This does not cause the sound. After the bolt dies a vacuum if left in the path. Surrounding air rushes in from all sides, clashing in a thunder clap.

The time difference is, as all have said, because of the difference in velocities of light and sound.

2007-07-11 22:21:30 · answer #4 · answered by A.V.R. 7 · 0 0

It is not when the clouds strike each other, but when lightning jumps from a cloud to another with different static charge.
Light travels at 186,000 miles per second so you see the lightning fist.
Sound travels at 100 feet per second , so you hear the thunder later. Thunder is caused by the super heating of the air by the lightning .

2007-07-11 05:06:03 · answer #5 · answered by science teacher 7 · 1 0

First of all lightness do not occur when clouds hit each other.

It happens due to the accumilation of negative particles in the cloud and it induces positive charges on the earth.

Well i dont know whether u have learned the properties of electronic particles in physics.

The negatively charged particles cut through the air(which we see as the flash)and gets neutralised with the positively charged particles.

For more details visit Wikipedia.org if u want to learn more.

Secondly we see the flash first then the sound because light travels faster than sound.

Speed of light is 3000000000 metres in one second.
Sound travels only about 300 metres in 1 second.

2007-07-11 05:28:52 · answer #6 · answered by Hitman 1 · 0 0

cloud does no make any sound while there's a favorable cost in a cloud and a damaging cost comes close to it then the damaging cost runs to wards constructive cost and this we see as lightning. Lightning heats interior of reach air to approximately 10,000 °C (18,000 °F) virtually quickly, it incredibly is exceptionally much two times the temperature of the sunlight’s floor. The heating creates a ask your self wave it incredibly is heard as thunder

2016-10-19 03:53:46 · answer #7 · answered by Anonymous · 0 0

The sound is caused by the lightning moving through the air. The lightning super heats the air and that makes it expand very quickly. This pushes agains the surrounding air. This creates a shock wave. The shock wave is what you hear as thunder.

2007-07-11 05:05:09 · answer #8 · answered by Gwenilynd 4 · 0 1

Lightening travels faster than the speed of sound.

2007-07-11 06:03:50 · answer #9 · answered by Anonymous · 0 0

There are two correct answers to this question.

Answer A: Some people say Jesus is the answer ... but I believe in this case it is Zeus!

Answer B: You are standing too far from the lightning. Get closer and they will both come at the same time.

2007-07-11 05:10:27 · answer #10 · answered by Anonymous · 0 0

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