Where does Thunder come from?

Discussion in 'Earth Science' started by marzy2003, Jan 30, 2004.

  1. marzy2003 Registered Member

    Messages:
    8
    I just want to ask a simple question that needs a technical Answer!!

    Where does Thunder come from?????

    I've heard many opinions such as Clouds banging together etc.
    But i've never actually belived it, and was wondering where it actually came from
     
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  3. Eggsited Registered Senior Member

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    thunder its the sound produced from the spark

    like a gas cooker sparker that gose tic...tic
    only meny times bigger

    rise in temperature and electrostatc repulsion or something expands the air around it and the presure wave is the sound
     
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  5. Idle Mind What the hell, man? Valued Senior Member

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    It's basically a sonic boom created by the air being heated and expanding against the surrounding air. The air heats up to 50 000 degrees in less than a second, and the massive expansion (air is less dense as it heats) against the surrounding air (still cold) causes a boom.
     
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  7. spidergoat Valued Senior Member

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    well, you're all wrong.

    Thunder is caused when air rushes back into the space left when lighting vaporizes the atmosphere.
     
  8. certified psycho Beware of the Shockie Monkey Registered Senior Member

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    Here is my simple answer to this simple question. I would have to say it is from the sky

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  9. cosmictraveler Be kind to yourself always. Valued Senior Member

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  10. John Connellan Valued Senior Member

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    Thunder comes from lightning!!!
     
  11. curioucity Unbelievable and odd Registered Senior Member

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    spidergoat
    your answer supports mine...... I thought that when lightning flashes, a column of vacuum is created and after the lightning is gone, the air goes to the vacuum and causes thunder.....
     
  12. John Connellan Valued Senior Member

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    At most it is probably a combination of the two with the rushing air having little effect on noise production. First of all I don't see how rushing air could create a thunderous boom and also the ionised track is very thin. There's not much rushing to be done anyway.
     
  13. Ice Registered Member

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    Thunder is created by the expansion of the air as it is heated rapidly.
     
  14. John Connellan Valued Senior Member

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    Thats more like it!!!
     
  15. cosmictraveler Be kind to yourself always. Valued Senior Member

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    Actually it comes from your mind. If you couldn't hear it you wouldn't know it was there . Your ears pick up the vibrations that send that signal to your mind hence you hear the thunder.

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  16. John Connellan Valued Senior Member

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    Thunder is generally defined as the noise energy which every so often emanates from a thundercloud region and not electrical signals in the human brain. This is why we can't call somebody moving barrells around upstairs, 'thunder'!!!
     
  17. Lemming3k Insanity Gone Mad Registered Senior Member

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    1,180
    Quote - 'Actually it comes from your mind. If you couldn't hear it you wouldn't know it was there'
    the 2nd bit is true, but it would still be there even though we were unaware of it, the ears pick up the vibrations, the brain defines it as what we call thunder, not a sheep bleeting or some other noise, the thunder itself doesnt actually come from the mind.
     
  18. Starthane Xyzth returns occasionally... Valued Senior Member

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    By another definition, "thunder" is a moving and powerful speech... Something which a clever lawyer will steal from his opponent.
     
  19. John Connellan Valued Senior Member

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    Yes but the original poster mentioned clouds so he was looking for the answer to the meteorological question. Also this is an earth science forum! Smartass

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  20. Catastrophe Registered Senior Member

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    Larousse Dictionary of Science and Technology:

    "thunder (Meteor) The cracking, booming or rumbling noise which accompanies a flash of lightning. The noise has its origins in the violent thermal changes accompanying the electrical discharge, which cause non-periodic wave disturbances in the air. Its reverberatory characteristic arises mainly from the continuous arrival of the brief noise from sections of the discharge at increasingly remote locations, since the spark may be several kilometres log. Claps of thunder occur when the spark is, roughly, normal to the line of observation."
     
  21. Zero Banned Banned

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    2,355
    Everyone knows that thunder is produced by the little green men sitting inside the clouds, and that the clouds are really UFO's manned by a highly advanced civilization that breeds us to consume as food. :bugeye:

    --Long Live the Female Messiah.

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  22. hypewaders Save Changes Moderator

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    Thorax, fabjani!
     
  23. Starthane Xyzth returns occasionally... Valued Senior Member

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    How many children have been frightened by thunder because they thought it was the roaring of some child-eating monster in the sky?

    Or, if we want to get really retro, why not say it's Thor smiting giants with his hammer, or Hephaestus pounding metal on his anvil?
     

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