Final answer:
Students predict and test air flow when a window or door is opened by observing tissue paper movements, which helps them understand and adjust their models of air leakage rate.
Step-by-step explanation:
To test for air leakage rate, students are assigned a window or door to create a diagram hypothesizing the air flow through the room. This involves marking on the diagram where to test the air flow with tissue paper and predicting the movement of the paper in accordance with their airflow hypothesis.
Upon opening the window or door, students will observe and record the direction of tissue movement to compare with their predictions. This real-world testing helps identify any discrepancies between predicted and actual airflow, allowing them to adjust their hypothesis. Finally, discussions around the accuracy of the model, considering limitations such as air infiltration, can lead to a better understanding of factors affecting air flow in enclosed spaces.