This lesson allows students to see the different types of soil by showing them that each different soil particle has a different density. This is a fun and interactive way to get students excited about soil.
This hands-on experiment demonstrates soil’s function as a water filter, as well as other physics concepts like hydrophobicity, soil absorption and adsorption, soil as a storage container for water, and the positive and negative charges of soil and contaminants.
In this lesson students explore weatherization (physical and chemical) by doing a series of short experiments that demonstrate how rocks and minerals are broken down into soil. Expand this lesson further by taking students on a field trip to look for rocks breaking down into soil.
Students learn about the small fraction of the planet available for growing food and ways this precious area can be protected. This two-part lesson is an excellent way to introduce students to the importance of preserving soil and soil’s role in feeding 7+ billion people.