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Astrophysics flashcards
74 cards drawn from the 13 lessons of astrophysics: 30 definitions, 28 recall prompts, 3 off-sheet equations and 13 spot-the-error cards. Grade yourself and the deck reschedules each card at staged intervals, from the next day out to three weeks.
Year 13 · Astrophysics lessons · all 851 cards
Every card in this unit
Click any card to try it in the player above; the card itself links the lesson that teaches it.
- Angular magnificationDefine
- Normal adjustmentDefine
- Chromatic aberrationDefine
- State the cure for spherical aberrationRecall
- The astronomical refracting telescopeSpot the error
- Reflecting telescopesSpot the error
- Rayleigh criterionDefine
- Quantum efficiencyDefine
- State the quantum efficiency of a CCD and of the eyeRecall
- Explain why X-ray telescopes use grazing incidenceRecall
- Telescopes beyond the visibleSpot the error
- Collecting power and objective diameterEquation
- Resolving power, collecting power and the CCDSpot the error
- Apparent magnitudeDefine
- State the brightness factor for a difference of one magnitudeRecall
- State the brightness factor for a difference of five magnitudesRecall
- Absolute magnitudeDefine
- ParsecDefine
- State the parsec in light yearsRecall
- Astronomical unitDefine
- Light yearDefine
- Distance modulusDefine
- Parallax angleDefine
- State the parallax equation and the units it needsRecall
- Radiation flux from luminosity and distanceEquation
- The apparent magnitude scaleSpot the error
- Stellar distances and absolute magnitudeSpot the error
- Black bodyDefine
- State what the black-body spectrum depends onRecall
- State the spectral class orderRecall
- State the unit of the Wien constantRecall
- State the Balmer absorption conditionRecall
- State where Balmer lines are strongestRecall
- Black-body radiation and spectral classesSpot the error
- Hertzsprung-Russell diagramDefine
- State how the temperature axis runs on the HR diagramRecall
- PlanetDefine
- Planetary satelliteDefine
- CometDefine
- Solar systemDefine
- GalaxyDefine
- UniverseDefine
- Chandrasekhar limitDefine
- State the peak absolute magnitude of a type Ia supernovaRecall
- Schwarzschild radiusDefine
- State the properties of a neutron starRecall
- Planetary nebulaDefine
- State where the supergiants sit on the HR diagramRecall
- Explain the evolution of a massive star after the main sequenceRecall
- The HR diagram and the life of Sun-like starsSpot the error
- Supernovae, neutron stars and black holesSpot the error
- Red shiftDefine
- State when z = v/c is validRecall
- Observed frequency from a source moving towards youEquation
- The Doppler effect and red shiftSpot the error
- Cosmic microwave backgroundDefine
- State the origin of the cosmic microwave backgroundRecall
- State what the CMB showsRecall
- Hubble's lawDefine
- State how to find the age of the universe from HRecall
- Explain the Big Bang evidence from element abundancesRecall
- Cosmological principleDefine
- State what the Big Bang means for space and timeRecall
- State the main stages in the evolution of the universe after the Big BangRecall
- Hubble's law and the Big BangSpot the error
- QuasarDefine
- State the power output of a quasarRecall
- Radial velocity methodDefine
- Transit methodDefine
- State the transit dip depthRecall
- Explain how quasar size is found from variabilityRecall
- State what the radial velocity wobble givesRecall
- QuasarsSpot the error
- Detecting exoplanetsSpot the error
The lessons these cards come from
- The astronomical refracting telescope
- Reflecting telescopes
- Telescopes beyond the visible
- Resolving power, collecting power and the CCD
- The apparent magnitude scale
- Stellar distances and absolute magnitude
- Black-body radiation and spectral classes
- The HR diagram and the life of Sun-like stars
- Supernovae, neutron stars and black holes
- The Doppler effect and red shift
- Hubble's law and the Big Bang
- Quasars
- Detecting exoplanets
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