In this experiment, you will use a Water Cycle Column and probeware as you investigate the hydrologic cycle and related concepts.
In a typical three-bottle Water Cycle Column, water moves up a wick from a pool of water in the bottom chamber to soil in the middle chamber by capillary action. Water in the soil can evaporate and become water vapor in the middle chamber. Transpiration, the loss of water vapor from the aerial surfaces of plants, is an additional source of water vapor in the middle chamber.
In the Preliminary Activity, you will gain experience using a pH Sensor and learn pH measuring technique as you determine the pH of a water sample.
After completing the Preliminary Activity, you will first use reference sources to find out more about the hydrologic cycle and related concepts before you choose and investigate a researchable question.
Sensors and Equipment
This investigation requires each of the following Vernier sensors and equipment (unless otherwise noted):
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.