Why So Porous?

Theme:Water Science
Location:Eagle's Nest (Back Porch)
Map #:36


To introduce students to different soil particles and to demonstrate how they play a role in filtering and storing the Earth’s water.  Students will come to understand infiltration and porosity.


Key Messages

  • Soil acts as a natural filter for our groundwater
  • Soil porosity refers to the amount of pore, or open space, between soil particles
    • it is the amount of space between soil particles
    • the shape and arrangement of soil particles help determine porosity
  • Soil porosity is important
    • it contains groundwater that most of us depend on for drinking water
  • Infiltration, the movement of groundwater, occurs in these spaces
    • some precipitation infiltrates into the surface of soil and rock

Ontario Curriculum Connections

Science and Technology
  • Understanding Life Systems, Grade 4 (Habitats ad Communities)
    • identify factors that affect the ability of plants and animals to survive in a specific habitat
    • demonstrate an understanding of habitats as areas that provide plants and animals with the necessities of life


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