Flash and thunder are produced simultaneously?
Question: Flash and thunder are produced simultaneously?
Flash and thunder are not produced simultaneously, although they may seem to be to human perception.
Lightning is an electrical discharge that occurs between regions of a cloud or between a cloud and the ground. When lightning occurs, it rapidly heats the surrounding air to extremely high temperatures, causing it to expand and create a shock wave that we hear as thunder.
The speed of light is much faster than the speed of sound, so when lightning occurs, we see the flash of light almost instantaneously. However, sound travels much more slowly through the air, so it takes longer for the sound of thunder to reach our ears.
The delay between the lightning flash and the thunder we hear can give us a rough estimate of how far away the lightning is. We can calculate this by counting the number of seconds between the flash and the thunder and dividing by 5 to get the distance in miles. For example, if we count 10 seconds between the flash and the thunder, the lightning is about 2 miles away (10 divided by 5).
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