Transfer Of Thermal Energy - Conduction

10 Questions

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Transfer Of Thermal Energy - Conduction

Online Quiz - Transfer of Thermal Energy & Conduction


Questions and Answers
  • 1. 
    When you put your hand in a cup of ice water, your hand feels cold. This is because ___________.
    • A. 

      Your hand gains the coldness from the ice water

    • B. 

      Your hand loses thermal energy to the ice water

    • C. 

      The ice water loses thermal energy to your hand

    • D. 

      The ice water loses the coldness to your hand

  • 2. 
    Which of the following is the poorest conductor of thermal energy?
    • A. 

      Vacuum

    • B. 

      Air

    • C. 

      Water

    • D. 

      Wool

  • 3. 
    When you stand in bare feet with one foot on a stone floor and the other on a carpet, the stone floor feels colder than the carpet. The most likely explanation is that ________________.
    • A. 

      Air is unable to circulate through the carpet fibres

    • B. 

      More energy flows from the carpet to your foot than from the stone floor to your foot

    • C. 

      More energy flows from your foot to the stone floor than to the carpet

    • D. 

      the stone floor is at a lower temperature than the carpet

  • 4. 
    When one end of a rod is heated, thermal energy is transferred down the rod by _________ .
    • A. 

      Hot molecules moving along the rod

    • B. 

      Hot molecules changing places with the cooler ones

    • C. 

      The air around the rod moves after being heated

    • D. 

      The transfer of kinetic energy from one molecule to the next

  • 5. 
    • A. 

      A match can only be lit by striking it on a rough surface

    • B. 

      The flame is not hot enough

    • C. 

      Air is a bad conductor of thermal energy

    • D. 

      The flame does not radiate any thermal energy sideways

  • 6. 
    • A. 

      Water is a poor conductor of thermal energy.

    • B. 

      The gauze prevents the thermal energy from reaching the ice.

    • C. 

      Ice is a poor conductor of thermal energy.

    • D. 

      The test tube conducts the thermal energy away from the ice.

  • 7. 
    • A. 

      The metal ruler conducts thermal energy away from your hand faster

    • B. 

      The molecules in the metal ruler are less energetic

    • C. 

      The metal ruler has a shinier surface

    • D. 

      The metal ruler is a worse radiator of thermal energy

  • 8. 
    When we heat a beaker on a tripod, a gauze is usually placed on the tripod. This is because the gauze ___________.
    • A. 

      Spreads the thermal energy evenly over the base of the beaker

    • B. 

      Increases the rate of heating by becoming red hot itself

    • C. 

      Increases the rate of heating by conducting the heat faster

    • D. 

      Concentrates the thermal energy at one part of the base of the beaker

  • 9. 
    Thermal conduction in metals differs from thermal conduction in insulators. The reason for this is that, in metals, thermal energy can be transferred by _________.
    • A. 

      Positive ions

    • B. 

      Free electrons

    • C. 

      Infra-red rays

    • D. 

      Molecular vibrations

  • 10. 
    • A. 

      Temperature flows from the hot object to the cold object.

    • B. 

      Temperature flows from the object with the most thermal energy to the object with the least thermal energy.

    • C. 

      The object with the most thermal energy always has the highest temperature.

    • D. 

      Energy flows from the object with the highest temperature to the object with the lowest temperature.