Space and Spectrometry

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What is a spectrometer?
A tool used to analyse the light given out by stars and galaxies.
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How do they work?
A telescope directs a beam of light into the spectrometer and through a slit which diffracts the light and splits it up into a spectrum.
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What are the dark lines in the light spectra caused by?
The light at those wavelengths being absorbed.
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What is absorption spectra?
The pattern of the dark lines in the light spectra.
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What is absorption spectra used for?
Work out what the stars and galaxies are made of.
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What is emission spectra?
Bright lines that some spectra contain.
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What is emission spectra caused by?
Extra light being emitted at those wavelengths.
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Give an example of absorption spectra telling us what some stars or galaxies are made of.
The absorption spectra seen when looking at the sun is very similar to the light from a hydrogen lamp, telling us that the Sun is mostly made from hydrogen.
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Other cards in this set

Card 2

Front

How do they work?

Back

A telescope directs a beam of light into the spectrometer and through a slit which diffracts the light and splits it up into a spectrum.

Card 3

Front

What are the dark lines in the light spectra caused by?

Back

Preview of the front of card 3

Card 4

Front

What is absorption spectra?

Back

Preview of the front of card 4

Card 5

Front

What is absorption spectra used for?

Back

Preview of the front of card 5
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