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Acid Precipitation

Cartoon leaf holding an umbrella over baby plant

What is Acid Rain?

Acid rain is any precipitation that has an unusually low pH. It can be rain, snow, fog, etc. But what is a low pH and why is this a problem?

How does rain become acidic?

How does rain become acidic?

Learn how to make a pH indicator and test water samples.

What are the effects of acid rain on rocks?

What are the effects of acid rain on rocks?

Learn about the chemical reaction that happens between acid rain and limestone.

Nitrogen symbol from periodic table

Understanding the Nitrogen Cycle

What is the nitrogen cycle? How do human activities such as using fertilizer affect the nitrogen cycle? How can this cause greenhouse gases?