1. Ground Water

2. Points to Be Covered on Ground Water
How does ground water move? What is porosity? permeability?
Infiltration?
How is ground water formed?
3. What is an aquifer,
4. Be able to discuss the use of wells
in ground water, including potential
problems.

3. When precipitation falls on the land surface, what happens to it?
Origin of Ground Water
When precipitation falls on the land surface, what happens to it?
Goes back into the H20 cycle, or is runs over land surface
Afterwards, it infiltrates (Flow into) the land surface and percolates (seeps) downward and becomes ground water

4. Ground Water As Part of the Hydrologic Cycle

5. Groundwater
When water passes through the sediment’s pores and is contain underground after reaching a surface that it cannot penetrate.

6. How does ground water move?
Porosity: amount of spacing in sediment material.
Porosity depends upon:
-shape of grains
- arrangement of grains
- size distribution
- compaction
Permeability: ability of an material to allow the passage of H2O
Depends upon
- Porosity (spacing between sediment

7. What is an aquifer? A permeable, water-containing unit.
Area where groundwater is temporarily stored.
Groundwater can leave by flowing to streams, springs, or to wells

8. What are some other problems associated with the use of wells?
Lack of filtering in under privilege regions.
Limited amounts of groundwater in some rock types.
Runoff- pollution invasion.