What equipment is used in the infrared radiation experiment?

  1. Leslie's cube
  2. Infrared thermometer
  3. Stopwatch
  4. Boiling water
  5. Heat proof mat

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What is the independent variable in the infrared radiation experiment?

Different faces of Leslie's cube

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What is the dependent variable in the infrared radiation experiment?

The amount of heat emitted from each face.

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What are the control variables in the infrared radiation experiment?

  1. The size and shape of Leslie's cube
  2. Initial temperature of water added

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How is the infrared radiation from different surfaces measured?

By placing hot water in a Leslie's cube with different coloured surfaces and measuring the temperature of each face over time.

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What does the Leslie's cube demonstrate?

That the colour of a surface affects how much infrared radiation it absorbs and emits.

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How can you determine which surface colour emits the most infrared radiation?

Plot a graph of temperature vs time for each surface. The surface that cools the slowest emits the least infrared radiation.

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What is infrared radiation?

A type of electromagnetic radiation given off by hot objects.

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Why does surface colour affect infrared radiation absorption/emission?

Darker colours absorb more radiation, lighter colours reflect more radiation.

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