Why Do We See Lightning Before We Hear Thunder?

Lightning reaches our eyes before thunder reaches our ears because light travels faster than sound.

Light travels at the rate of 186,282 miles per second, while sound is much slower, 1,087 feet, or about 1/5 of a mile, per second.

You can tell how far away a storm is by counting the seconds between the lightning flash and the clap of thunder, every 5 seconds between the two equals one mile!

13 Comments

  1. Anonymous
    Posted 2009/10/06 at 5:27 am | Permalink

    WOW!where do u get that???

  2. johnny
    Posted 2010/03/11 at 1:42 am | Permalink

    why light is regarded as a fastes thing in the world?

  3. SARAH ABDULLA
    Posted 2010/06/17 at 11:45 pm | Permalink

    I GOT IT FROM MY SCHOOL BOOK;SCIENCE.
    WHAT IS YOUR NAME?
    WANT TO BE A PEN FRIEND?

  4. SARAH ABDULLA
    Posted 2010/06/17 at 11:47 pm | Permalink

    ANYBODY

  5. [G]E.O/R[G]I.A
    Posted 2010/06/28 at 8:47 am | Permalink

    HEYA

  6. bentol
    Posted 2010/09/29 at 12:28 pm | Permalink

    sweeet dude

  7. angel
    Posted 2010/11/25 at 12:26 pm | Permalink

    wow.
    what’s up

  8. REAL TALK
    Posted 2011/01/08 at 6:55 am | Permalink

    REALLY AND TRULY THUNDER OCCURS FIRST WHEN D CLOUDS RUB AGAINST ONE ANOTHER AND DEN LIGHTENING HAPPENS BUT BECAUSE LIGHT TRAVELS FASTER DAN SOUND WE GET LIGHTENING FIRST. HI SARA WHERE R U FROM?

  9. jamaica dela cruz
    Posted 2011/06/08 at 8:34 pm | Permalink

    because of friction..

    friction produce sounds..

  10. abiodun adeyemi
    Posted 2011/08/06 at 7:47 am | Permalink

    light is suppose to be regard as the faster…….imagine it has about 300000000 metre per seconds

  11. abiodun adeyemi
    Posted 2011/08/06 at 7:48 am | Permalink

    why sound is just 330 meter per seconds

  12. alzy
    Posted 2012/11/14 at 9:27 am | Permalink

    so useful!
    we had to explain why we see lightning before we hear thunder for homework!!
    glad i found dis
    y.o.l.o.

  13. alfred
    Posted 2013/04/08 at 1:04 pm | Permalink

    i think thunder is the result when lightning strikes, it distorts the air making huge sound waves thus resulting in thunder. the stronger and nearer the lightning the louder the thunder

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