The Surfaces of a Dewar Flask Are Silvered for the Purpose

question 29

Multiple Choice

The surfaces of a Dewar flask are silvered for the purpose of minimizing heat transfer by what process?

• A)conduction
• B)radiation
• C)convection
• D)vaporization

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Definitions:

Pericardium

The membranous sac that covers the heart.

Meninges

Protective membranes that cover the brain and spinal cord, comprising the dura mater, arachnoid mater, and pia mater.

Chronic Obstructive Pulmonary Disease

A progressive lung disease characterized by increasing breathlessness, often caused by smoking.

Respiratory

Pertaining to or serving for respiration, which is the process of inhaling oxygen and exhaling carbon dioxide.