Galactic Red-shift (AQA GCSE Physics): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is red shift?
What is red shift?
Light is stretched towards the red end of the spectrum
When does red shift occur?
When does red shift occur?
When galaxies move away from Earth
How does the amount of red shift relate to galaxy distance?
How does the amount of red shift relate to galaxy distance?
Red shift increases with distance
What does red shift provide evidence for?
What does red shift provide evidence for?
Universe is expanding
In the balloon analogy, what does the balloon represent?
In the balloon analogy, what does the balloon represent?
The universe
In the balloon analogy, what do the dots on the surface represent?
In the balloon analogy, what do the dots on the surface represent?
Galaxies
What happens to light wavelengths during red shift?
What happens to light wavelengths during red shift?
Wavelengths appear longer
What happens to light frequency as wavelength increases during red shift?
What happens to light frequency as wavelength increases during red shift?
Frequency appears to decrease
Why does frequency decrease during red shift?
Why does frequency decrease during red shift?
Each wave emitted from a position further away
What does observation of red shift support about the universe?
What does observation of red shift support about the universe?
Expanding since the Big Bang