Red-shift (AQA GCSE Physics): Flashcards
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Practise the cards
13 cards from this deck
Red-shift occurs when
Red-shift occurs when
Light source moves away from us
Red-shift effect on wavelength
Red-shift effect on wavelength
Wavelength increases (becomes longer)
Blue-shift occurs when
Blue-shift occurs when
Light source moves towards us
Astronomer who discovered red-shift (1929)
Astronomer who discovered red-shift (1929)
Edwin Hubble
Red-shifted galaxies mean
Red-shifted galaxies mean
Galaxies are moving away from us
Furthest galaxies move away...
Furthest galaxies move away...
Fastest
Spectral lines are like...
Spectral lines are like...
Fingerprints of elements in stars
Red-shift supports which theory
Red-shift supports which theory
Big Bang theory
Age of universe
Age of universe
13.8 billion years
Universe expansion is...
Universe expansion is...
Speeding up (accelerating)
Dark matter is...
Dark matter is...
Invisible matter that doesn't emit light
Dark energy causes...
Dark energy causes...
Universe expansion to speed up
Greater red-shift means galaxy is...
Greater red-shift means galaxy is...
Further away