Recommended for grades 10–16.
Water sample collection and analysis and the long-term study of a local system or environmental problem can be important field-study components of a biology course. You will experience both in this investigation.
In this Preliminary Activity, you will gain experience using a Dissolved Oxygen Probe while measuring the concentration of dissolved oxygen (DO) in a water sample provided by your teacher. You will also gain experience using a Temperature Probe, a Conductivity Probe, and a pH Sensor. You may or may not choose to use all four of the sensors as you subsequently research your chosen question.
After completing the Preliminary Activity, you will first use reference sources to find out more about water issues before you choose and investigate a researchable question that involves long-term data collection. Some topics to consider in your reference search are:
- water resources
- water quality
- water pollution
- dissolved oxygen (DO)
- total dissolved solids
Sensors and Equipment
This investigation requires each of the following Vernier sensors and equipment (unless otherwise noted):
You may also need an interface and software for data collection. What do I need for data collection?
Download Experiment Preview
The student-version preview includes:
- Step-by-step instructions for the Preliminary Activity
- List of materials and equipment
Note: The experiment preview of the Preliminary Activity does not include essential teacher information, safety tips, or sample data. Instructions for Logger Pro and other software (such as LabQuest App or TI handheld software, where available) are on the CD that accompanies the book. We strongly recommend that you purchase the book before performing experiments.
No standards correlations for this experiment.