ACID RAIN HOW DOES ACID RAIN AFFECT SEEDS AND PLANTS?
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21-Dec-2015 -
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Transcript of ACID RAIN HOW DOES ACID RAIN AFFECT SEEDS AND PLANTS?
Once upon a time
ONCE UPON A TIME...… 8C got a task: They were to investigate how acid rain affects
cutlings and seeds.The students worked and worked…
Experiment setup… and finally the setup of the experiment was ready:
Three different ”rain waters” were made: 1. plain, neutral water
2. acid rain at pH 53. really acid rain at pH 4
Cutlings of a garden plant, ”Painted nettle” (Solenostemon
scutellarioides), were put in the three different ”rain waters” and left for a
week.
There were three groups of students doing the same experiments.
At pH 5 the results were not that good – one nettle did quite well, one wasn’t that ok anymore and one had almost given
up.
Was there perhaps a slight pH difference between the three separate experiments at pH 5?
Alfalfa seeds were sown on soil and watered with the same
three ”rain waters” as earlier, namely not treated water as
well as ”acid rain” at pH 5 and at pH 4. After a week the results
were checked.
Then we had the seed experiments.
Clean water – wonderful for growing alfalfa sprouts!
(The cup with less sprouts in the picture just had less seeds in it from the beginning.)