A good description of soil porosity and how it is measured. There are links to mixing soil, aerating soil, and soil settling with rain.

This resource includes an experiment to show where rainwater goes. Discover the different layers of soil and what each layer is made of.

Often, when we think of something that is solid we think about rocks. But in reality, rocks have tiny holes of air inside them. This is called porosity. In this experiment you can find out what it means to be "solid as a rock."

During this activity, students will learn about porosity and permeability and relate these concepts to groundwater flow. Students will use simple materials to conduct a porosity experiment and use the information to understand how...

Permeability is the degree to which water or other liquids are able to flow through a material. Different substances such as soil, gravel, sand, and asphalt have varying levels of permeability. In this activity, students will explore...

Students measure the permeability of different types of soils, compare results and realize the importance of size, voids and density in permeability response.

Students investigate soil porosity by building a model using the three main soil textures: sand, silt, and clay.