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General Environmental Science Science Fair Project

Acid Rain and Algae

Acid Rain and Algae | Science Fair Projects | STEM Projects
We're going to find out if acid rain can hurt algae by testing different types of algae in different levels of acidity.


The hypothesis is that green algae and red algae will be able to survive in acidic water as they are acidophilic plants.

Method & Materials

You will separate the beakers into 3 groups and label them with the type of algae and the pH level. You will add sulfuric acid to the beakers to get the desired pH level. You will observe the algae over a period of time.
You will need 15 ml of spirogyra algae, 15 ml of green algae, 15 ml of red algae, 9 beakers, 1 bottle of sulfuric acid, 1800ml of distilled water, 1 measuring cylinder, several pieces of pH paper, and 1 black marker pen.


The experiment showed that red algae is able to survive in the acidic water and is acidophilic. Green algae is able to tolerate a small amount of acidity in the water but spirogyra cannot survive in acidic waters at all.

Why do this project?

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

Also Consider

What would happen if this science fair project was repeated using other acids such as hydrochloric acid or nitric acid? Have you wondered whether algae are able to survive in basic (alkaline) solutions?

Full project details

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

Related videos

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