Physics 0625 · IGCSE · Transfer of thermal energy

Transfer of thermal energy — practice question

A liquid is heated, causing it to expand. In what way does this cause a convection current to form?

  • AThe density of the heated liquid decreases.
  • BThe density of the heated liquid increases.
  • CThe mass of the heated liquid particles decreases.
  • DThe mass of the heated liquid particles increases.

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