Because the speed of light travels faster than the speed of sound.
It means your too close to the lightning!
Just for fun: If you see a clap of thunder, call a journalist! More seriously, if you see a flash of lightning and hear a clap of thunder at almost the same exact time, it means that the electrical discharge that generated both the lightning and the thunder is very close to you, and you should take precautions immediately to avoid injury to yourself. Usually, the most practical precaution is to seek shelter in a building protected by lightning rods or a metal vehicle that will conduct electricity around you more readily than through you!
Since the speed of light is faster than the speed of sound, you will see the lightening bolt first. If you count the seconds between the two, you will have a rough estimate as to how far away the lightening bolt is.
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
To estimate your distance from a thunderstorm count the number of seconds between a flash of lightning and the next clap of thunder. Divide your answer by 5. See the related link below.
A thunder "slap" does not exist. A thunder "clap" does. A thunder clap is the term given to the sound thunder is and makes.
The collective noun for thunder that starts with the letter "c" is "clap." In meteorology, a clap of thunder refers to the sound produced by the rapid expansion of air surrounding a lightning bolt. Thunder is created when lightning heats the air, causing it to rapidly expand and create a shock wave that we hear as thunder.
It means your too close to the lightning!
thunderthunderclapthunderstormthunderstrucklightninglightning boltclapclapboardthunderclapstormrainstormsandstormhailstormthunderstormfirestormsnowstormbrainstormwindstorm
the lightning was 0.8 miles away.
Just for fun: If you see a clap of thunder, call a journalist! More seriously, if you see a flash of lightning and hear a clap of thunder at almost the same exact time, it means that the electrical discharge that generated both the lightning and the thunder is very close to you, and you should take precautions immediately to avoid injury to yourself. Usually, the most practical precaution is to seek shelter in a building protected by lightning rods or a metal vehicle that will conduct electricity around you more readily than through you!
Thunder claps.
A peal of thunder
The loud noise is called 'thunder' or 'a thunder clap'. The sudden increase in pressure and temperature from lightning produces rapid expansion of the air surrounding and within a bolt of lightning. In turn, this expansion of air creates a sonic shock wave which produces the sound of thunder.
Lightning is a visible phenomenon that travels at the speed of light, while sound from thunder travels much slower at the speed of sound. This difference in speed is why we see the lightning first before hearing the thunder, creating a gap between the two perceptions.
the clap of thunder went bang and scared my poor dog
No, sound energy is a form of energy produced by vibrations that travel through a medium, such as air, water, or solids. A clap of thunder is the sound produced by the rapid expansion of air due to the extreme heat generated by a lightning strike in the atmosphere.