Quasars (AQA A-Level Physics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does the term 'quasar' stand for?
What does the term 'quasar' stand for?
Quasi-stellar object
What is found at the centre of a quasar?
What is found at the centre of a quasar?
A supermassive black hole
What surrounds the black hole in a quasar?
What surrounds the black hole in a quasar?
Rotating disc of gas and dust
From where does a quasar emit powerful jets of radiation?
From where does a quasar emit powerful jets of radiation?
From its poles
How does the luminosity of some quasars compare to galaxies?
How does the luminosity of some quasars compare to galaxies?
Energy output of several galaxies combined
What does the large red-shift of quasars indicate?
What does the large red-shift of quasars indicate?
They are moving away quickly
What is the typical size of a quasar?
What is the typical size of a quasar?
A few light-years across
According to the inverse square law, how does intensity vary with distance?
According to the inverse square law, how does intensity vary with distance?
Inversely proportional to square of distance
How are quasars primarily identified?
How are quasars primarily identified?
Intense luminosity & high red-shifts
What is special about quasar ?
What is special about quasar ?
First quasar discovered