1. Chapter 11
The Flow of Fresh Water

2. Chap 11, Sec 3 (Water Underground – new book)
Objectives:
Identify and describe the location of the water table.
2. Describe how people obtain water from an aquifer.

3. Tech Terms:
water table – marks the top of the saturated zone (the dividing line between the unsaturated and saturated zones).
aquifer – a rock layer that stores enough groundwater for humans to use.

4. 3. porosity – the percentage of open space between individual rock particles in a rock layer (open spaces = pores).
4. permeable – the ability of a rock layer, that has tiny holes (pores) which are connected, to allow water to pass freely through.

5. Larger the particles = Higher the permeability
impermeable – the ability of a rock layer to stop the flow of water.
Larger the particles = Higher the permeability
6. saturated zone – the area of permeable rock or soil that is totally filled (saturated) with water.

6. 7. unsaturated zone – layer of rock above the water table that contains mostly air instead of water.
recharge – new water that enters the aquifer from the surface of the Earth (this occurs in a recharge zone).