Geosphere: Properties of Soil

Will a plant grow here or not? Many physical characteristics of soil affect its productivity. This activity helps students understand the variability of soil in terms of its physical properties.

Soil Properties Graphs

Using the Turbidity Sensor, students can assess differences in soil properties. Since clay does not "settle out", the turbidity remains high. Students can quickly differentiate the components of soil.
Enlarge graph.

Lab Summary:

Many physical characteristics of soil affect its productivity. Soil scientists evaluate soil along several parameters to assess soil health and composition. In this exploration, students will use a turbidity sensor and general laboratory procedures and observations to investigate several properties of soil, including air space, texture, density, moisture, and porosity.

Download free labs:

(student versions)

Computer-based lab (PDF, 618 KB)

Xplorer GLX-based lab (PDF, 164 KB)

Method:

Use a Turbidity Sensor to investigate several properties of soil, including air space, texture, density, moisture and porosity.

Here's What You Need:

Required for Xplorer GLX-based lab:

(See lab download for computer-based lab requirements, which may differ)

Probeware

Other Materials

  • Balance
  • Mortar and Pestle
  • Beakers (4), 100-mL
  • Graduated Cylinder, 100-mL
  • Glass Jar
  • Pipets (4)
  • Large Container for discarded samples
  • Microwave-safe Dish
  • Digging Tool or Trowel
  • Stirring Rod
  • Protective Gear
  • Soil Clods (2), Labeled "A" and "B"
  • Large piece of butcher paper
  • Paper Cup
  • Can of spray polyurethane
  • Small soup can with top & bottom removed
  • Soil sample from local area
  • Sand, 51.5 g
  • Clay, 1.5 g
  • Potting Soil, 1.5 g
  • Water, 2L

Lab Manual:

The computer-based activity is included in Explorations in Earth and Environmental Science (PS-2809). The Xplorer GLX-based lab is included in Earth and Environmental Science with the Xplorer GLX (PS-2821A). Both manuals are complete with Teacher Information pages, student instructions and handouts, and sample data.

For your convenience, we offer bundles which provide the probeware for the activities in the manual. For more, please see:
Computer-based Earth and Environmental Science Lab Manual and Bundles
Xplorer GLX-based Earth and Environmental Science Lab Manual and Bundles