Red-shift (OCR GCSE Physics A (Gateway Science Suite)): Quizzes
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Practise the questions
9 questions from this quiz
What is red shift?
What is red shift?
Light from galaxies stretched to red end
When does red shift occur?
When does red shift occur?
Galaxies moving away from Earth
How does red shift relate to galaxy distance?
How does red shift relate to galaxy distance?
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 represents galaxies?
In the balloon analogy, what represents galaxies?
Dots on surface
What happens to wavelengths in red shift?
What happens to wavelengths in red shift?
They become longer
What happens to frequency of light during red shift?
What happens to frequency of light during red shift?
Frequency decreases
Why does light get stretched in an expanding universe?
Why does light get stretched in an expanding universe?
Travels through expanding space
What does red shift observation support?
What does red shift observation support?
Universe expanding since Big Bang