Chapter 16: Heat Transfer

41 Questions | Total Attempts: 348

SettingsSettingsSettings
Please wait...
Chapter 16: Heat Transfer

Questions and Answers
  • 1. 
    Substances absorb heat energy by the process of
    • A. 

      Conduction.

    • B. 

      Convection.

    • C. 

      Radiation.

    • D. 

      All of these

  • 2. 
    Metals are both good heat conductors and good electrical conductors because of the
    • A. 

      Similarity between thermal and electrical conductive properties.

    • B. 

      Looseness of outer electrons in metal atoms.

    • C. 

      Relatively high densities of metals.

    • D. 

      High elasticity of metals.

    • E. 

      Ability of metals to transfer energy easily.

  • 3. 
    A good heat conductor is
    • A. 

      A poor insulator.

    • B. 

      A good insulator.

    • C. 

      Neither a poor nor a good insulator.

  • 4. 
    Your feet feel warmer on a rug than on a tile floor because a rug
    • A. 

      Is usually warmer than tile.

    • B. 

      Is a better insulator than tile.

    • C. 

      For the same mass has more internal energy than tile.

    • D. 

      All of these

    • E. 

      None of these

  • 5. 
    Energy transfer by convection is primarily restricted to
    • A. 

      Solids.

    • B. 

      Liquids.

    • C. 

      Gases.

    • D. 

      Fluids.

    • E. 

      None of these

  • 6. 
    Warm air rises because faster-moving molecules tend to move to regions of less
    • A. 

      Density and less pressure.

    • B. 

      Pressure.

    • C. 

      Density.

  • 7. 
    At the same temperature, which move with the greater speed in the air?
    • A. 

      Very light molecules

    • B. 

      Heavier molecules

    • C. 

      All will have equal average speeds.

  • 8. 
    The higher the temperature of an object
    • A. 

      The longer the wavelengths it radiates.

    • B. 

      The shorter the wavelengths it radiates.

    • C. 

      Makes no difference in the wavelengths it radiates

  • 9. 
    Objects that radiate relatively well
    • A. 

      Absorb radiation relatively well.

    • B. 

      Reflect radiation relatively well.

    • C. 

      Both of these

    • D. 

      Neither of these

  • 10. 
    If a solid object radiates more energy than it absorbs, its
    • A. 

      Internal energy and temperature decrease.

    • B. 

      Temperature decreases.

    • C. 

      Internal energy decreases.

    • D. 

      None of the above choices are true.

  • 11. 
    The pupil of your eye is
    • A. 

      A net absorber of radiant energy.

    • B. 

      A net emitter of radiant energy.

    • C. 

      Neither a net absorber nor emitter of radiant energy.

  • 12. 
    A liter of hot water will cool to room temperature faster in a
    • A. 

      Black pot.

    • B. 

      Silver pot.

    • C. 

      Red pot.

    • D. 

      Depends more on the size of the pot than its color

  • 13. 
    Cold water will warm to room temperature faster in a
    • A. 

      Black pot.

    • B. 

      Silver pot.

    • C. 

      Depends more on the size of the pots than their color

  • 14. 
    An object will normally be a net radiator of energy when its temperature is
    • A. 

      Higher than its surroundings.

    • B. 

      Lower than its surroundings.

    • C. 

      Neither of these

  • 15. 
    It is commonly thought that a can of beverage will cool faster in the coldest part of a refrigerator. Knowledge of Newton's law of cooling
    • A. 

      Supports this common knowledge.

    • B. 

      Shows this common knowledge is false.

    • C. 

      Supports or contradicts this common knowledge.

  • 16. 
    Which body glows with electromagnetic waves?
    • A. 

      Both the Sun and the Earth

    • B. 

      Only the Sun

    • C. 

      Only the Earth

    • D. 

      Neither the Sun or the Earth

  • 17. 
    Neither the Sun or the Earth
    • A. 

      Awaits the next century.

    • B. 

      Already exists.

    • C. 

      Is theoretically impossible.

  • 18. 
    The planet Earth loses heat mainly by
    • A. 

      Conduction.

    • B. 

      Convection.

    • C. 

      Radiation.

    • D. 

      All of these

  • 19. 
    Waves emitted by the sun and terrestrial wave emissions are
    • A. 

      The same except for their frequencies and wavelengths.

    • B. 

      Entirely different kinds of waves.

    • C. 

      Identical.

  • 20. 
    If air were a better conductor than it is, at nighttime the Earth would be
    • A. 

      Considerably colder.

    • B. 

      Considerably warmer.

    • C. 

      Not appreciably different in temperature.

  • 21. 
    A water-filled paper cup held in a flame will not catch fire. This is because
    • A. 

      The inside of the paper is wet.

    • B. 

      Water is an excellent conductor of heat.

    • C. 

      Paper is a poor conductor of heat.

    • D. 

      The paper cup cannot become appreciably hotter than the water it contains.

  • 22. 
    Both black and white road surfaces absorb sunlight. At the end of a sunny day the warmer road surface will be
    • A. 

      The black surface.

    • B. 

      The white surface.

    • C. 

      Neither – there is no difference.

  • 23. 
    Both black and white road surfaces radiate energy. At the end of a starry night the warmer road surface will be
    • A. 

      The black surface.

    • B. 

      The white surface.

    • C. 

      Neither – there is no difference.

  • 24. 
    An object will normally be a net radiator of energy when its internal energy is
    • A. 

      More than that of its surroundings.

    • B. 

      Less than that of its surroundings.

    • C. 

      Neither of these, because internal energy is not temperature.

  • 25. 
    Newton's law of cooling applies to objects that are
    • A. 

      Cooling.

    • B. 

      Heating.

    • C. 

      Both of these

    • D. 

      None of these

Back to Top Back to top