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Soil pH Protocol DLESE Reviewed Collection
The purpose of this resource is to measure the pH of a soil horizon. Students mix dried and sieved soil samples with distilled water. The mixture is allowed to settle until a relatively clear layer is formed. Students use a pH pen, pH meter, or pH paper to determine the pH of the sample. The procedure is done three times for each horizon.
Intended for grade levels:
  • Primary (K-2)
  • Intermediate (3-5)
  • Middle (6-8)
  • High (9-12)
Type of resource:
  • For the classroom:
    • Classroom activity
    • Field activity
Subject:
  • Agricultural science
  • Soil science
Technical requirements:
Adobe Acrobat reader
Cost / Copyright:
No cost
For science/educational use consistent with the methodologies of the GLOBE Program.
DLESE Catalog ID: GLOBE-97
Educational standards:
  • National Science Education Standards (NSES):
    • K-4:
      • Unifying concepts and processes:
        • Change, constancy, and measurement
        • Form and function
        • Systems, order, and organization
      • A - Science as inquiry:
        • Abilities necessary to do scientific inquiry
        • Understanding about scientific inquiry
      • B - Physical science:
        • Properties of objects and materials
      • D - Earth and space science:
        • Properties of earth materials
      • E - Science and technology:
        • Understanding about sci. / tech.
      • F - Science in personal / social perspectives:
        • Changes in environments
    • 5-8:
      • Unifying concepts and processes:
        • Change, constancy, and measurement
        • Form and function
        • Systems, order, and organization
      • A - Science as inquiry:
        • Abilities necessary to do scientific inquiry
        • Understanding about scientific inquiry
      • B - Physical science:
        • Properties and changes of properties in matter
      • F - Science in personal / social perspectives:
        • Populations, resources, environments
    • 9-12:
      • Unifying concepts and processes:
        • Change, constancy, and measurement
        • Form and function
        • Systems, order, and organization
      • A - Science as inquiry:
        • Abilities necessary to do scientific inquiry
        • Understandings about scientific inquiry
      • B - Physical science:
        • Structure and properties of matter
      • D - Earth and space science:
        • Geochemical cycles
      • F - Science in personal / social perspectives:
        • Environmental quality
  • National Geography Standards:
    • Environment and society:
      • How human actions modify the physical env.
      • How physical systems affect human systems
Resource contact / Creator / Publisher:
Author: University Corporation for Atmospheric Research (UCAR)
The GLOBE Program
http://www.globe.gov/