What is thunder: Definition and 25 Discussions

Thunder is the sound caused by lightning. Depending upon the distance from and nature of the lightning, it can range from a long, low rumble to a sudden, loud crack. The sudden increase in temperature and hence pressure caused by the lightning produces rapid expansion of the air in the path of a lightning bolt. In turn, this expansion of air creates a sonic shock wave, often referred to as a "thunderclap" or "peal of thunder". The scientific study of thunder is known as brontology and the irrational fear (phobia) of thunder is called brontophobia.

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  1. K

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  3. G

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  4. M

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  5. EmilyBergendahl

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  6. Edison Bias

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  7. C

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  8. S

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  9. N

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  10. N

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  11. I

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  12. S

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  13. M

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  14. T

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  15. O

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  16. P

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  17. J

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  18. P

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  19. A

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  20. Evo

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  21. wolram

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  22. E

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  23. R

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  24. S

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  25. P

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