Radiation 2

Science Practicals: GCSE, topic 3.1.13

Surface Area & Temperature

The amount of radiation emitted by a body (object) depends on its surface area and surface temperature.

High surface temperature

High surface temperature

  • Bodies with a higher surface temperature will emit radiation faster.
High surface area

High surface area

  • Bodies with a large surface area will emit radiation faster.

Test yourself on Radiation 2

  • Which of the following is true of emitters?

  • How does surface temperature affect the rate of emission of radiation?

  • If one thermometer has a black bulb and the other has a shiny foil bulb, which will have the higher temperature if both are heated?

  • Explain how Leslie's cube works.

  • Which of the following statements is true, in connection with Leslie's cube?

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