Emitting & absorbing EM radiation (Edexcel GCSE Physics): Quizzes
📚Quizzes
Practise the questions
11 questions from this quiz
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Practise the questions
11 questions from this quiz
What is intensity in terms of EM radiation?
What is intensity in terms of EM radiation?
Power per unit area
What do all objects constantly do with EM radiation?
What do all objects constantly do with EM radiation?
Emit and absorb it
What happens to peak wavelength as an object's temperature increases?
What happens to peak wavelength as an object's temperature increases?
Shifts to shorter wavelengths
When does an object's temperature increase?
When does an object's temperature increase?
Absorbs more than it radiates
What condition keeps an object at constant temperature?
What condition keeps an object at constant temperature?
Radiates and absorbs same power
What happens to Earth's temperature during daytime?
What happens to Earth's temperature during daytime?
Local increase
What causes Earth's temperature to decrease at night?
What causes Earth's temperature to decrease at night?
Radiation emission
When does Earth's temperature stay fairly constant?
When does Earth's temperature stay fairly constant?
Absorbed equals emitted radiation
What causes global warming according to the note?
What causes global warming according to the note?
Atmosphere absorbs more, emits less
Why seal test tubes with bungs in the emission experiment?
Why seal test tubes with bungs in the emission experiment?
To prevent evaporation heat loss
Which surface is a better emitter of radiation?
Which surface is a better emitter of radiation?
Matte and black