Physics 0625 · IGCSE · Transfer of thermal energy

Transfer of thermal energy — practice question

A liquid is heated in a beaker. As the liquid’s temperature rises, its density changes. This results in energy being carried through the liquid. How does the density change, and what is this energy transfer process?

  • Adensity decreases; conduction
  • Bdensity decreases; convection
  • Cdensity increases; conduction
  • Ddensity increases; convection

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