Stars can be Classified by their Colours Flashcards
What does the colour of a star depend on?
The visible light it emits
Do all stars emit visible light?
Yes
How much visible light it emits of each frequency depends on?
Each frequency depends on its surface temp
All stars of a similar colour will be of a….
Similar temp
What colours do we use to classify stars?
Red, orange, yellow, white and blue
The hotter the star…
The more light of higher frequencies it will emit
When will a cool star emit most of its visible light?
At the lowest frequency of visible light, so it will appear red
Orange starts are hotter than…
Red stars
Yellow starts are hotter than…
Orange stars
White starts are hotter than…
Yellow stars
What do white stars emit?
All frequencies of visible light roughly equally
Blue stars are hotter than…
White stars
Why are blue stars hotter than white stars?
They emit more high frequency light than lower frequency ones and so they appear blue
