Physics 0625 · IGCSE · Transfer of thermal energy

Transfer of thermal energy — practice question

A liquid is warmed in a beaker. As the temperature rises, the liquid’s density changes. This leads to energy being transferred through the liquid. What change occurs in the density, and what is this energy transfer process called?

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

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