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Red shift, the Big Bang and the expanding universe · GCSE Physics · Courselo

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GCSE Physics
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Space physics and astrophysics

Red shift, the Big Bang and the expanding universe

Space physics and astrophysics · Lesson 3 of 3

Lesson 3 of 3

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Unit 9

Space physics and astrophysics

3 lessons · 3 h 15 min of study

The Solar System, orbital motion and satellites1 h of study
Stars, galaxies and stellar evolution1 h 15 min of study
Red shift, the Big Bang and the expanding universeReading · 0%

This unit is ≈4% of the GCSE Physics, across 3 lessons. Full syllabus

Lesson 3 of 3 · Space physics and astrophysics

Red shift, the Big Bang and the expanding universe

3 quick checks<1% of the testStretch: Stretch: harder material that separates the top grades

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By the end you’ll be able to

describe red shift as an increase in observed wavelength from light emitted by a source moving away from the observer
interpret red-shift data from distant galaxies as evidence that most galaxies are receding from Earth
explain that the observation of widespread red shift supports the idea that the universe is expanding

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Adaptive questions on red shift, the Big Bang and the expanding universe.

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state the Big Bang model as the theory that the universe began from an extremely hot, dense state and has expanded over time

describe key evidence for the Big Bang model, including red shift and the cosmic microwave background radiation

evaluate how observational evidence supports scientific models of the origin and evolution of the universe while recognising that models develop as new evidence becomes available

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