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

Today’s Lab

• 4 groups of 4-5 students:– Groups 1 – SAND– Groups 2 – GRAVEL– Groups 3 – TOP SOIL– Groups 4 – CLAY

Lab Setup

TIME?

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?

HYPOTHESIS??

PREDICTIONS??

TOP SOIL GRAVEL CLAY SANDT1 T2 T1 T2 T1 T2 T1 T272 180 11 9 27 55 53 36

Average Time126 10 41 44.5

Class Data