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5.3 Black body radiation

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Question 11
F

Surfaces are chosen to control how much infrared radiation they absorb and emit.

a.

At the end of a marathon, runners are given thin, shiny metal-coated blankets to wrap around themselves.

Explain how a shiny blanket helps to keep a runner warm.

[2]
b.

In hot countries, many houses are painted white.

Explain why this keeps the inside of the houses cooler during the day.

[2]
c.

A black car and a white car are parked next to each other in the Sun for two hours. The cars are identical apart from their colour.

Explain why the temperature inside the black car rises more than the temperature inside the white car.

[2]
d.

At night, the temperature of the black car falls faster than the temperature of the white car.

Explain why.

[2]
Markscheme

5.3 Black body radiation Questions

  1. GCSE
  2. /Physics
  3. /5.3 Black body radiation

96 exam-style questions on Edexcel GCSE Physics 5.3 Black body radiation, covering 5.3.1 Emission of radiation and temperature, 5.3.2 Radiation balance and constant temperature, and 5.3.3 The temperature of the Earth. Each one has a worked solution and a mark scheme showing where the marks go.

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