Heat Transfer Mechanisms Quiz

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Questions and Answers

Which mechanism is the chief mechanism in heat transfer in solids?

  • Conduction (correct)
  • Radiation
  • Forced convection
  • Convection

In which type of convection does the medium move due to density differences?

  • Forced convection
  • Radiation
  • Free convection (correct)
  • Conduction

Which mechanism involves heat transfer by means of collisions between rapidly moving molecules?

  • Free convection
  • Radiation
  • Forced convection
  • Conduction (correct)

Which heat transfer mechanism is characterized by the motion of the medium itself?

<p>Forced convection (A)</p> Signup and view all the answers

What is the method by which heat is transferred by electromagnetic waves?

<p>Radiation (A)</p> Signup and view all the answers

What is heat of fusion?

<p>The heat required to convert a material from solid to liquid at the melting temperature (B)</p> Signup and view all the answers

Which factor determines the intensity of heat in an object?

<p>Temperature (A)</p> Signup and view all the answers

What determines whether or not a system will be in equilibrium with other systems?

<p>Temperature (B)</p> Signup and view all the answers

In which state is latent heat of fusion released?

<p>Solid state (C)</p> Signup and view all the answers

Which unit is used to measure heat of fusion?

<p>Calories per gram (A)</p> Signup and view all the answers

What property is used to describe how well a material conducts heat?

<p>Thermal conductivity (C)</p> Signup and view all the answers

What is specific heat?

<p>The amount of heat needed to raise the temperature of one gram of a substance by 1°F (A)</p> Signup and view all the answers

Why is specific heat important in dental considerations?

<p>To understand the total heat needed to raise the temperature to the melting point (A)</p> Signup and view all the answers

What does thermal conductivity measure?

<p>The flow of heat through a body under specific conditions (A)</p> Signup and view all the answers

Why are metals considered better conductors than non-metals?

<p>Metals have higher thermal diffusivity (D)</p> Signup and view all the answers

What dental consideration is mentioned regarding denture base materials and heat transfer?

<p>Denture base materials should efficiently conduct heat to the mucosal surface (D)</p> Signup and view all the answers

Why is an insulating base material recommended beneath large metallic amalgam restorations?

<p>To minimize heat conduction to the tooth pulp (D)</p> Signup and view all the answers

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