porosity – the amount of empty space in a rock or other earth substance; this empty space is known as pore space. Porosity is how much water a substance can hold. Porosity is usually stated as a percentage of the material’s total volume.
permeability – is how well water flows through rock or other earth substance. Factors that affect permeability are how large the pores in the substance are and how well the particles fit together.
7th Grade Homework:
Go to: http://www.youtube.com/watch?v=uQRvN6MUajE
This Excellent video will give you an overview of what groundwater is and how it relates to human interactions!
Answer these questions after viewing the video:
1. How does an aquifer (groundwater) get filled (recharged)?
2. How does water get cleaned before it goes to the aquifer?
3. Where do homes with well's get there drinking water?
4. How does tar and cement keep groundwater from being recharged?
5. List three pollutants that are seeping into the groundwater in the video.
6. List two ways to prevent groundwater/aquifer contamination.
7. What are some ways to conserve water?
8. What can you do to help keep ground water recharged and clean?
9. What ecoregion do we live in?
10. If a tsunami were to hit Texas which ecoregion would it affect?
11. What kind of damage would it cause on the ecoregion?
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