The Hertzsprung-Russell Diagram (HSC SSCE Physics): Flashcards
📚Flashcards
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Practise the cards
10 cards from this deck
Two properties plotted on H-R diagram
Two properties plotted on H-R diagram
Absolute magnitude (brightness) & spectral type (temperature)
Spectral sequence hottest to coolest
Spectral sequence hottest to coolest
O B A F G K M
Mnemonic for O B A F G K M sequence
Mnemonic for O B A F G K M sequence
Oh Be A Fine Guy/Girl Kiss Me
Meaning of lower/negative magnitude values
Meaning of lower/negative magnitude values
Brighter stars (e.g., brighter than )
Nuclear process in main sequence stars
Nuclear process in main sequence stars
Fusing hydrogen into helium in cores
Why red giants are cool yet very luminous
Why red giants are cool yet very luminous
Enormous surface area
Why white dwarfs are hot yet very dim
Why white dwarfs are hot yet very dim
Extremely small size (Earth-sized)
Star colour: hottest vs coolest
Star colour: hottest vs coolest
Blue (hot) vs red (cool)
Protostar energy source before fusion
Protostar energy source before fusion
Gravitational potential energy from collapse
Mass vs main sequence lifetime relationship
Mass vs main sequence lifetime relationship
More massive = less time (faster fuel burn)