Understanding Heat Flow

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Questions and Answers

What is the main process responsible for heat flow in solids?

  • Evaporation
  • Radiation
  • Convection
  • Conduction (correct)

In heat flow in fluids, which process causes the hot part of the fluid to rise above the cooler part?

  • Convection (correct)
  • Evaporation
  • Condensation
  • Sublimation

Why does a cork bob out of water when heated at the bottom?

  • Due to sublimation
  • As a result of convection (correct)
  • Through radiation
  • Because of evaporation

What distinguishes heat flow in fluids from heat flow in solids?

<p>Fluids involve material movement in addition to energy transfer (A)</p> Signup and view all the answers

Why does steam escape from the dishwasher according to the passage?

<p>Through convection (C)</p> Signup and view all the answers

What is heat, according to the passage?

<p>Energy in the form of random molecular motions (B)</p> Signup and view all the answers

In which direction does heat flow spontaneously?

<p>From a hot place to a cold place (D)</p> Signup and view all the answers

What happens when two objects reach thermal equilibrium?

<p>The objects reach the same temperature (B)</p> Signup and view all the answers

What is the term for heat transfer through electromagnetic waves?

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

How does heat flow differ based on the state of matter involved?

<p>It flows differently in solids, liquids, and gases (B)</p> Signup and view all the answers

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