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Thunder is the shockwave radiating away from the strike path. When the air heats up, it expands rapidly, creating a compression wave that propagates through the surrounding air. This compression wave manifests itself in the form of a sound wave. That does not mean that thunder is harmless. On the contrary, if you are close enough, you can feel the shockwave as it shakes the surroundings. Keep in mind that when a nuclear explosion occurs, typically the most destruction is caused by the energy of the rapidly moving shockwave. In fact, the shockwave that produces the thunder from a lightning strike can most certainly damage structures and people. This danger is more prominent when you are close to the strike, because the shockwave is stronger there and will dampen (decrease) with distance. Physics teaches us that sound travels much slower than light, so we see the flash before we hear the thunder. In air, sound travels roughly 1 mile every 4.5 seconds. Light travels at a blazing 186,000 miles (299,000 kilometers) per second.

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17y ago

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Related Questions

Can you see thunder or lightning?

You see lighting and hear thunder.


Do you see or hear lightning?

You see the lightening, and hear the thunder.


Why do you see thunder after you see the flash of lightning?

You don't see thunder. You hear thunder. You hear thunder after seeing the lightning because light travels faster than sound. The further the storm away is, the bigger the time between when you see the lightning and hear the thunder.


Why do you often hear thunder when you see lightning?

You often hear thunder when you see lightning because lightning produces a sudden and rapid heating of the air around it, causing it to expand quickly. This rapid expansion creates a shock wave that we hear as thunder. The farther away you are from the lightning, the longer it takes for the sound to reach you.


If you see lightning and didn't here thunder what dose that mean?

If you see lightning but don't hear thunder, it means the lightning is far away. The speed of light is much faster than the speed of sound, so you usually see lightning before you hear the associated thunder.


How come you see lighting and do not hear it and how come you hear thunder and do not see it?

You see lightning before you hear it because light moves faster than sound. Thunder comes from the lightning. You can't hear it until the sound waves reach you.


Is thunder the same as lightning?

Thunder and lightning occur roughly at the same time during a thunderstorm, but they are different things. Typically you see the lightning first and then you hear the thunder.


Why do you see lightning before you see thunder in terms of wave theory?

You see lightning first because light travels faster then sound.Also, you don't see thunder - you hear it.


Why do sometimes hear thunder at about the same time you see flash of lightning but other times you hear thunder after the flash?

If you hear the thunder almost at the same time as the lightning flash - the storm is directly overhead. Usually - the sound of thunder arrives a few seconds after the lightning, because light travels much faster than sound.


How do you hear thunder?

lightning heats the air which we hear as thunder


Why is there a delay between the lightning an thunder?

There is a delay between seeing the lightning and hearing the thunder because the speed of light (lightning) is much faster than the speed of sound (thunder). Thus, you SEE lightning first, and then you HEAR thunder later.


What does thunder mean?

thundery rain means there is a chance you may hear thunder and see lightning during a heavy downpour