Physics 0625 · IGCSE · Transfer of thermal energy

Transfer of thermal energy — practice question

The metal outside of a kettle is hot. What happens to the cool air around the kettle when it touches the hot kettle?

  • AThe density of the air decreases and the air falls.
  • BThe density of the air decreases and the air rises.
  • CThe density of the air increases and the air falls.
  • DThe density of the air increases and the air rises.

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