Optical Phenomena and Properties of Matter (Grade 12 NSC Matric Physical Sciences): Quizzes
📚Quizzes
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10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is an emission spectrum?
What is an emission spectrum?
Pattern of specific wavelengths emitted
Which wavelength corresponds to the red line in hydrogen's visible emission spectrum?
Which wavelength corresponds to the red line in hydrogen's visible emission spectrum?
656 nm
The Balmer series consists of transitions ending at which energy level?
The Balmer series consists of transitions ending at which energy level?
What happens to electrons when they emit photons?
What happens to electrons when they emit photons?
They fall to lower energy levels
Which spectral series produces ultraviolet radiation?
Which spectral series produces ultraviolet radiation?
Lyman series
What does an absorption spectrum show?
What does an absorption spectrum show?
Dark lines in continuous spectrum
How are emission and absorption spectra related for the same element?
How are emission and absorption spectra related for the same element?
Absorption is exact inverse of emission
How do astronomers identify elements in stars?
How do astronomers identify elements in stars?
By analyzing unique spectral lines
What does redshift indicate about a galaxy's motion?
What does redshift indicate about a galaxy's motion?
Moving away from Earth
Why do greenhouse gases like CO₂ absorb infrared radiation?
Why do greenhouse gases like CO₂ absorb infrared radiation?
Energy levels match infrared wavelengths