4. Drag the pressure meter to ground level. 5. Determine the pressure at the ground. This is the atmospheric pressure. 6. Now you are going to observe the different pressures under the ground or below the surface. 7. The pressure meter measures the absolute pressure - the actual pressure that is occurring. 8. This absolute pressure is the sum of the atmospheric pressure and gauge pressure (which takes into account the fluid only.) 9. Using the pressure meter, measure the absolute pressure at 3 different positions below the surface: 1 meter, 2 meters, and 3 meters below the surface. 10. Record the values in Table 1. 11. Solve for the gauge pressure at each position. This is the experimental value. Pabs = Patm + Pg where: Pabs = absolute pressure Patm = atmospheric pressure Pg = gauge pressure 12. Theoretically, the gauge pressure is the product of the weight of the fluid and the distance from the surface. Po = pgh where: Po = gauge pressure, Pa (or N/m?) p = density of the fluid, kg/m3 (click this for the value: g = acceleration due to gravity, m/s (9.8 m/s is used in the simulation) h = distance from the surface, m 13. Solve for the theoretical value of gauge pressure at each position