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Geology Science Fair Project

How much water can soil hold?

How much water can soil hold? | Science Fair Projects | STEM Projects
Have you ever wondered how much water can fit in the tiny spaces between soil particles? Let's find out! We'll measure the porosity of different types of soil by filling a beaker with soil and then slowly pouring water into it until it reaches saturation.


The hypothesis is that different types of soil will have different levels of porosity.

Method & Materials

You will fill a beaker with soil, fill another beaker with water, and slowly pour the water into the soil until it reaches saturation.
You will need two 500 ml beakers, water, and a dry soil sample or sand.


The experiment showed that different types of soil have different levels of porosity. The most interesting observation was that the porosity of the soil sample was directly related to the amount of water it could hold.

Why do this project?

This science project is interesting because it shows how the tiny spaces between soil particles can affect the amount of water that can be stored in the soil.

Also Consider

Experiment variations to consider include testing different types of soil, such as clay, sand, and silt, and testing different amounts of water.

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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