Required practical - Infrared radiation (AQA GCSE Physics): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is the main aim of the Leslie's cube practical?
What is the main aim of the Leslie's cube practical?
To investigate how surface nature affects thermal energy transfer
Which four surfaces does Leslie's cube have?
Which four surfaces does Leslie's cube have?
Dull black, shiny black, silver, white
In Method 1, at what distance should you measure temperature from each surface?
In Method 1, at what distance should you measure temperature from each surface?
10 cm
In Method 2, what do you use to heat each side of Leslie's cube?
In Method 2, what do you use to heat each side of Leslie's cube?
A radiant heater from about 10 cm away
Which variable must be kept constant for accurate results?
Which variable must be kept constant for accurate results?
Same distance from each surface
Starting at 80°C, which surface cooled most in the radiation test?
Starting at 80°C, which surface cooled most in the radiation test?
Dull black (finished at 56°C)
Starting at 20°C, which surface warmed most in the absorption test?
Starting at 20°C, which surface warmed most in the absorption test?
Dull black (reached 34°C)
Which surface is the worst at both emitting and absorbing infrared radiation?
Which surface is the worst at both emitting and absorbing infrared radiation?
Silver
What does the practical show about good emitters?
What does the practical show about good emitters?
Good emitters are also good absorbers
What are dark, matt surfaces good at doing?
What are dark, matt surfaces good at doing?
Emitting and absorbing infrared radiation
What are light, shiny surfaces like at handling infrared radiation?
What are light, shiny surfaces like at handling infrared radiation?
Poor at both emitting and absorbing
What do silver surfaces do with most infrared radiation?
What do silver surfaces do with most infrared radiation?
Reflect it rather than absorbing it