GLOBE Connections

Measuring Soil Moisture: GLOBE Learning Activities

Soil

Soil Moisture GLOBE Learning Activities have been developed to provide students with a hands-on experience to guide their understanding of the properties of soil that affect the amount of moisture it will hold.  

Soils as Sponges: How Much Water Does Soil Hold? 
Overview:
 Students determine the moisture content of a sponge after squeezing the water out of the sponge, and allowing water to evaporate from the sponge. Students also measure the amount of water that has evaporated from the soil samples.  Soil as Sponges

Student Outcomes:

  • Students will understand that objects can hold a measurable amount of water.
  • Students will be able to transfer this concept to soil by weighing wet and dry soil samples and calculating the amount of water held by the soil.

Just Passing Through
Overview: Students will time the flow of water through soils with different properties and measure the Just Passing Through Learning Activityamount of water held in these soils. They will also experiment with the filtering ability of soils by testing the pH of the water before and after it passes through the soil and observing changes to the clarity of the water and to the characteristics of the soil.  See link.

Student Outcomes:

  • Students will be able to identify the physical and chemical changes that occur as water passes through soil.
  • Students will be able to design experiments that test soil and water properties. Students will be able to explore the concept of Earth as a system.
  • Students will be able to apply the Scientific Research Process

 


Just Passing Through (Beginners Version)
Overview: Students time the flow of water through different soils and observe the amount of water heldJust Passing Through Learning Activity (Beginner Version) in these soils. They will also observe the filtering ability of soils by noting the clarity of the water before and after it passes through the soil.  See link.

Student Outcomes:

  • Students will be able to identify the physical and chemical changes that occur as water passes through soil.