Understanding Heat Flow
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Questions and Answers

What is heat flow?

  • The transformation of energy into matter
  • The movement of heat energy from one place to another (correct)
  • The freezing of water at low temperatures
  • The feeling of warmth when the sun shines

    • In which direction does heat flow spontaneously?

  • From a hot place to a cold place (correct)
  • It flows vertically
  • It doesn't have a specific direction
  • From a cold place to a hot place

    • What happens when two objects reach thermal equilibrium?

  • They explode due to excess heat
  • They start absorbing more heat
  • They stop exchanging heat and remain at the same temperature (correct)
  • One object cools down while the other heats up

    • Which form of heat flow involves the transfer of energy through electromagnetic waves?

    <p>Radiation</p> Signup and view all the answers

    What is the unit used to measure heat?

    <p>Joules</p> Signup and view all the answers

    What is the process of heat flow in solids called?

    <p>Conduction</p> Signup and view all the answers

    How does heat flow in fluids differ from heat flow in solids?

    <p>Fluids transfer heat through convection</p> Signup and view all the answers

    Why does a cork bob out of water when heated from below?

    <p>Due to a decrease in fluid density</p> Signup and view all the answers

    What is the main factor that causes heat transfer between molecules in solids during conduction?

    <p>Temperature difference between the materials</p> Signup and view all the answers

    How does heat flow in fluids involve both energy and matter compared to heat flow in solids?

    <p>Fluids involve both material movement and energy transfer</p> Signup and view all the answers

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