Uncontrolled Airflow Quiz

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1. According to the lesson, uncontrolled airflow:
- Occurs where the pathways of flow, the direction of flow, and the origin of the air are unknown, unspecified, or unintended
- Occurs through duct leaks
- Can result from interior door closure
- All of the above
2. The “building as a system” concept described in this lesson:
- Showed that pressure differences have no effect
- Showed how a supply side duct leak in a vented attic decreases outside air infiltration
- Showed how a return side duct leak in a vented attic pressurizes the main body of a house
- Showed how a return side duct leak in a vented attic depressurizes the main body of a house

1. According to the lesson, uncontrolled airflow: