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If water can pass through a surface, the surface is permeable .

If water can pass through a surface, the surface is permeable. predict the permeability of gravel. Gravel. Very high permeability. predict the permeability of sand. S and. High permeability. If water cannot pass through a surface, the surface is impermeable.

lilah-buckner
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If water can pass through a surface, the surface is permeable .

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  1. If water can pass through a surface, the surface is permeable.

  2. predict the permeability of gravel

  3. Gravel • Very high permeability

  4. predict the permeability of sand

  5. Sand • High permeability

  6. If water cannot pass through a surface, the surface is impermeable.

  7. Predict the permeability of silt

  8. Silt • Low permeability

  9. Predict the permeability of clay

  10. Clay • Very low permeability

  11. Cement

  12. Cement • Impermeable

  13. Run-off: Water that does not soak into the ground or evaporate, but instead flows across the land

  14. Let’s see how permeability affects our daily life.

  15. Do you think the surfaces in urban areas permeable or impermeable?

  16. Suburban areas

  17. Forest

  18. Conclusions • 1. Different land cover affects water runoff during/after storms in different ways. • 2. Human habitation changes land cover • 3. Communities need to be careful about how land is used.

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