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Seaweed Art Cards
  • Acid Rain Test

    Poisonous gases are constantly being released into the atmosphere from factories, power stations and car exhausts. When some of these gases mix with water, they make the water acidic. When these gases mix with rain clouds, they dissolve in the moisture of the clouds and form acid rain. Here is an experiment to show you how acid rain affects plants.


    • Three ┬ábig glass jars
    • Three ┬áspray bottles (One will do if you mix thoroughly between waterings.)
    • Measuring cup
    • Pen
    • Labels
    • Vinegar
    • Water
    • Three small potted plants, ones you can allow to die.

    Fill one jar with one cup of water and label “water”. Fill one jar 1/4 cup full with vinegar and 3/4 cup full of water and label “slightly acid”. Fill one jar with 1/2 cup water and 1/2 cup vinegar and label “stronger acid.” Label each of the potted plants “water”, “slightly acid” and “stronger acid”. Stand the plants in a row. Every day water and spray each one with the mixture from the jar that matches its label.

    Wait a week and see what happens. What happens to the plant that receives only water? And what happens to the plants that get the acidic water? Make a record to see how long it takes the plants watered with the stronger acid to die.

    Published on March 27, 2011 · Filed under: 10-13 year olds, 5-9 year olds, Earth Day;
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