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Why do leaves on trees turn over before it rains?

I think this may be folklore of some kind, but I think it is true. You can tell it is going to rain if the leaves on the trees turn over. It makes them look a little silvery. Does anyone know what I'm talking about, and why does this happen?

6 Answers

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  • 1 decade ago
    Favorite Answer

    The underside of leaves contain stomata. These pores open and close depending on the time of day. Water vapor and gasses pass through these pores. Perhaps with the change in air pressure the plant is positioning the stomata upwards for some reason.

  • Anonymous
    1 decade ago

    It is due to the barometric changes in the atmosphere. Like the air currents. Normally before a storm or rain the air currents begin to lift & also the winds pick up hence turning the leaves over.

  • ?
    Lv 4
    5 years ago

    plenty interior the way evolution in simple terms happens, timber have been right here continuously and the experience the oncoming rain. the leaves turn over, and that i've got no longer any theory what the explanation is, on instinct.

  • Anonymous
    1 decade ago

    ok, I think I learned this in grade 11...but they turn over so that the rain will slide off instead of making them water logged.

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  • Anonymous
    1 decade ago

    it is from the wind that precedes a storm.

  • 1 decade ago

    To keep their bottoms dry.

    OK Then, To wash their bottoms.

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