Physics 0625 · IGCSE · Transfer of thermal energy

Transfer of thermal energy — practice question

An engineer studies how the temperature of the oil in a car engine rises when it is first switched on. Which row is correct?

  • Achange in internal energy: increase; explanation: The random kinetic energy of the particles increases.
  • Bchange in internal energy: increase; explanation: The oil evaporates when it is heated.
  • Cchange in internal energy: decrease; explanation: The potential energy of the particles increases.
  • Dchange in internal energy: decrease; explanation: The oil changes state to a gas when it is heated.

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