Black Body 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 type of radiation do all objects emit and absorb, regardless of their temperature?
What type of radiation do all objects emit and absorb, regardless of their temperature?
Infrared radiation
How does the rate of radiation emission differ for hotter objects compared to cooler ones?
How does the rate of radiation emission differ for hotter objects compared to cooler ones?
Hotter objects emit more per second
What happens to the wavelength of radiation emitted as an object gets hotter?
What happens to the wavelength of radiation emitted as an object gets hotter?
Wavelengths become shorter
What is the key property that defines a black body?
What is the key property that defines a black body?
It absorbs all radiation it receives
What does a black body do with the radiation that hits it?
What does a black body do with the radiation that hits it?
Absorbs it without transmitting/reflecting
What range of wavelengths does a black body emit?
What range of wavelengths does a black body emit?
All wavelengths
For a body at constant temperature, how do emission and absorption rates compare?
For a body at constant temperature, how do emission and absorption rates compare?
Rate of absorption equals rate of emission
What is the term for the balance between energy absorption and emission at constant temperature?
What is the term for the balance between energy absorption and emission at constant temperature?
Thermal equilibrium
If a body's temperature is increasing, what does this tell us about its energy transfer?
If a body's temperature is increasing, what does this tell us about its energy transfer?
Absorbing more energy than it's emitting
If a body is cooling down, what is happening to its energy transfer?
If a body is cooling down, what is happening to its energy transfer?
Emitting more energy than it's absorbing
What colour do hotter stars appear?
What colour do hotter stars appear?
Blue
What colour do cooler stars appear?
What colour do cooler stars appear?
Red