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Transcript of Infiltration
Factors that affect the amount of water that seeps into the ground (infiltration)
1. Type of rock or soil on which the water falls
*POROSITY- The amount of PORE SPACE between the particles.
Particle shape and sorting
(Factor 1: Type of rock or soil continued)
RATE at which water passes through pore space
* Water passes easily through materials with more pore space
* Fine grained particles are usually less permeable or IMPERMEABLE
(shales and clays)
NOTE~ a material can be porous and not permeable. HOW????
Capillarity-how much water "sticks to" the particles
One day water said:
Smaller particles retain more water.
Unsorted particles retain more water.
In a hot and dry climate
3. STEEPNESS OF SLOPE
As gradient increases
As vegetation increases
5. LAND USE
Populated places = more pavement
As particle size increases capillarity __________
Which has greater capillarity?
Which retains more water?
The holes are not connected!
Which has the greatest particle size?
As particle size increases permeability ____________________
(Other factors that affect infiltration)
How permeable is frozen ground? Why?
Where does your water come from?
Find the impermeable layers.
Why is it important to dispose of toxins properly?
salt water encroachment
The H2O Cycle is driven by the sun!