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Botany Science Fair Project

Acid Rain and Plant Growth

Acid Rain and Plant Growth | Science Fair Projects | STEM Projects
We wanted to know if acid rain affects the growth of plants, so we set up an experiment to find out. We put two plants in pots, watered one with regular rainwater and the other with an acid solution. After a few weeks, the plant watered with the acid solution had died, while the other plant was still alive.


The hypothesis is that the plant watered with the acid solution will grow more slowly than the plant watered with regular rainwater.

Method & Materials

You will fill each pot with potting soil, label one pot "acid" and the other "normal", place a seed in each pot, water the seeds and soil, place both pots under a source of light, and mist the leaves of each pot with its matching spray bottle.
You will need 4 plastic pots, 4 spray bottles, 1 pH meter or pH paper, 2 eye droppers, 4 liters of distilled water, 1 marking pen, 8 marking pen, 1 source of light, 1 bag of potting soil, and 1 bottle of lemon juice.


The results of the experiment showed that the plant tested with an acid solution died, while the plant tested with distilled water lived. This indicates that the hypothesis should be accepted.

Why do this project?

This science project is interesting because it shows how acid rain can have a negative effect on the growth of plants.

Also Consider

Experiment variations to consider include testing different plants and using different types of acid.

Full project details

You can find additional information and details for this science fair project here. Have fun exploring!

Related video

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