Science Fair Projects World

Exploring Soil Composition

Exploring Soil Composition

Objective

Analyze and compare the composition of different soil samples.

Materials

  • Soil samples from different locations
  • Sieves of various mesh sizes
  • Glass jars
  • Water
  • Notebook for observations

Instructions

  1. Collect soil samples from different locations (e.g., garden, park, forest).
  2. Dry the soil samples if they are wet.
  3. Sift each sample through the sieves to separate different particle sizes.
  4. Observe and record the proportions of sand, silt, and clay in each sample in your notebook.
  5. Fill glass jars halfway with each soil sample and add water until they are nearly full.
  6. Shake the jars thoroughly and allow the soil to settle into layers.
  7. Record the thickness of each layer (sand, silt, clay) in your notebook.
  8. Analyze the composition of each soil sample and compare the differences between locations.