Which Principle of Heat Exchange Is the Most Important Explanation

question 39

Multiple Choice

Which principle of heat exchange is the most important explanation for why birds look larger in colder weather because they fluff their feathers?

• A) Fluffing feathers results in less cooling by radiation because feathers emit less infrared radiation than other tissues do.
• B) Fluffing decreases the amount of heat lost by conduction when the bird makes contact with cold objects in its environment.
• C) Fluffing creates a pocket of air near the bird that acts as insulation.
• D) Fluffing decreases the surface-area-to-volume ratio, thus decreasing the amount of heat lost to the environment.

---

Definitions:

Nursing Practice

The profession or practice of providing care for the sick and infirm.

Private Hospitalization

Inpatient medical treatment provided in privately-owned hospitals, often implying a higher cost and potentially more amenities compared to public hospitals.

Patients' Rights

The fundamental principles that recognize a patient's entitlements in the healthcare setting, including privacy, informed consent, and the right to refuse treatment.

Violent Physical Outburst

Explosive expressions of anger or frustration that result in physical aggression or harm.