1. Environmental Science Lab “Groundwater Pollution” Recall from last day: – POROSITY refers to the amount of space between particles of soil – Fluid stored in and around pores of soil is referred to as GROUNDWATER – INFILTRATION is how water moves through pores in the soil, eventually reaching stored groundwater – A large collection of groundwater underneath soil layers where we draw drinking water from is called the AQUIFER SURFACE

2. Today’s Lab 4 groups of 4-5 students: – Groups 1 – SAND – Groups 2 – GRAVEL – Groups 3 – TOP SOIL – Groups 4 – CLAY

3. Lab Setup TIME?

4. What are we investigating? QUESTION 1: HOW LONG DOES IT TAKE FOR THE SOLUTION TO FILTER THROUGH A GIVEN SOIL TYPE? QUESTION 2: WHICH SOIL TYPE IS THE MOST POROUS? THE LEAST POROUS?

5. HYPOTHESIS?? PREDICTIONS??

6. TOP SOILGRAVELCLAYSAND T1T2T1T2T1T2T1T2 7218011927555336 Average Time 126104144.5 Class Data