Black Body Radiation (OCR GCSE Physics A (Gateway Science Suite)): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 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 change for hotter objects?
How does the rate of radiation emission change for hotter objects?
They emit more radiation per second
What happens to the wavelength of radiation emitted by hotter objects?
What happens to the wavelength of radiation emitted by hotter objects?
Shorter wavelengths are emitted
What property defines a black body?
What property defines a black body?
Absorbs all radiation it receives
What does a black body do with radiation it receives?
What does a black body do with radiation it receives?
Does not transmit or reflect any
What type of emitter is a black body?
What type of emitter is a black body?
A perfect emitter
What is true for a body at constant temperature?
What is true for a body at constant temperature?
Absorption rate equals emission rate
What does it mean when a body's temperature is increasing?
What does it mean when a body's temperature is increasing?
Absorbing more energy than emitting
What is happening when a body is cooling down?
What is happening when a body is cooling down?
Emitting more energy than absorbing
What does the colour of a star indicate about its temperature?
What does the colour of a star indicate about its temperature?
Hotter stars appear blue