Activity Overview
In this activity, students will collect pressure readings at different depths in a water-filled pipe with the help of a pressure sensor. They will find a model this data and understand the relationship between depth and pressure.
Before the Activity
Connect a pressure probe to Channel 1 on the CBL 2™ or LabPro®
Connect the CBL 2 or LabPro to the calculator using the Unit-to-Unit cable
See the attached PDF file for detailed instructions for this activity
Print pages 19 - 25 from the attached PDF file for your class
During the Activity
Distribute the pages to your class.
Follow the Activity procedures:
Attach one end of the plastic tubing to the sinker weight and the other to the pressure sensor
Lower the weighted end into a vertical pipe filled with water and record pressure readings at various depths
Examine the graph of pressure versus depth
Calculate the slope and intercept information using any two data points and determine the equation of the line
Do a linear regression on all the data points and determine the regression line equation
Compare the two equations
Interpret the slope and intercept of the linear model
After the Activity
Students' will fill in the Student Data Collection and Analysis Sheet and answer questions listed in it.
Review student results:
As a class, discuss questions that appeared to be more challenging
Re-teach concepts as necessary