JAMB Physics questions: Heat transfer

12 questions with answers and explanations. Tap an option to check yourself.

1. Question 1· Heat transfer· JAMB

   Heat from the Sun can travel through empty space because radiation

   • Ais carried by convection currents
   • Buses air molecules
   • Cdoes not need a material medium
   • Dtravels only through solids

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2. Question 2· Heat transfer· JAMB

   Which surface is the best absorber of radiant heat?

   • Apolished silver
   • Bshiny white
   • Cdull black
   • Dglossy white

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3. Question 3· Heat transfer· JAMB

   The silvered walls of a vacuum flask mainly reduce heat transfer by

   • Aconvection
   • Bconduction
   • Cradiation
   • Devaporation

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4. Question 4· Heat transfer· JAMB

   Convection can take place only in

   • Asolids
   • Bfluids (liquids and gases)
   • Ca vacuum
   • Dmetals

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5. Question 5· Heat transfer· JAMB

   Heat is transferred mainly by conduction in

   • Agases
   • Bsolids
   • Ca vacuum
   • Dliquids only

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6. Question 6· Heat transfer· JAMB

   A good absorber of radiant heat is also a good

   • Aconductor
   • Breflector
   • Cemitter
   • Dinsulator

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7. Question 7· Heat transfer· JAMB

   A greenhouse stays warm because glass

   • Areflects all sunlight
   • Bconducts heat inwards
   • Cproduces heat itself
   • Dlets in short-wavelength radiation from the sun but blocks the long-wavelength radiation given off inside

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8. Question 8· Heat transfer· JAMB

   A sea breeze blows from the sea to the land

   • Aduring the day, when the land is warmer than the sea
   • Bat night, when the sea is warmer
   • Conly during storms
   • Donly in the dry season

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9. Question 9· Heat transfer· JAMB

   Heat from the Sun reaches the Earth mainly by:

   • Aconduction
   • Bconvection
   • Cevaporation
   • Dradiation

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10. Question 10· Heat transfer· JAMB

    Land and sea breezes are caused by

    • Aconvection
    • Bconduction
    • Cradiation only
    • Devaporation

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11. Question 11· Heat transfer· JAMB

    Metals are good conductors of heat mainly because they contain

    • Awater
    • Blarge atoms
    • Cair spaces
    • Dfree electrons

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12. Question 12· Heat transfer· JAMB

    During the day, a sea breeze blows from sea to land because

    • Athe land heats faster, so warm air over it rises and cooler sea air moves in
    • Bthe sea is warmer than the land
    • Cthe moon pulls the air
    • Dradiation cools the land

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