20 Questions
Why does low-lying ground or ground with little slope increase the infiltration of water?
Because it keeps water in contact with the dirt longer, allowing more time to permeate
How does vegetation contribute to increasing the infiltration rate?
By allowing water to seep down along roots and creating air space in decaying organic matter
What is a characteristic of limestone that enhances its permeability?
It allows water to pass through it fairly well
Why does sand facilitate easy infiltration of water?
Because individual grains of sand do not pack tightly, leaving lots of interconnected air space
How does clay's high porosity affect its permeability?
It causes low permeability as the air spaces created do not readily connect
Why does rain falling slowly enhance infiltration into the soil?
Because it provides time for both existing soil water to infiltrate further and for above-ground water to seep in
Which type of material allows almost no infiltration of water?
Granite
What impact does decaying organic matter have on soil regarding water infiltration?
It creates air spaces that can hold water.
What role does vegetation play in facilitating water infiltration into the ground?
It allows water to seep along roots and creates air spaces.
Why is limestone able to hold large amounts of water despite being permeable?
Since it creates interconnected air spaces.
What factor contributes to the high infiltration rate of water in sand?
Interconnected air spaces between grains
Why does low-lying ground or ground with little slope enhance water infiltration?
It allows water more time to permeate into the ground
What characteristic of clay affects its permeability?
Flat, stacked grains with no air spaces
Which type of material is impermeable and almost cannot absorb water?
Granite
Why does vegetation play a role in increasing infiltration rate into the ground?
It creates air spaces for water to flow through roots
How does limestone differ from granite in terms of water infiltration?
Granite allows easy water infiltration, whereas limestone does not
Which type of ground slope is favorable for enhancing water infiltration?
Flat slope
What effect does decaying organic matter have on soil porosity?
Increases porosity
What enables sand to allow easy infiltration of water?
Porous and permeable nature of sand
How does rain falling slowly benefit infiltration into the soil?
It provides time for existing soil water to infiltrate further down
Test your knowledge on managing runoff and stormwater drainage in areas prone to heavy rainfall. Learn about the measures cities take to reduce flooding and erosion caused by excessive runoff.
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