Spectroscopy and Stars – Practice


1) Identify the elements (A, D or Z) present in the gas mixture that the light in the spectrum below has passed through. The lines shown are absorption lines?

2) Sketch the intensity spectrum of the Sun and add to your sketch the intensity spectrum of a hotter star.

3) The diagram below illustrates the spectrum of gases in the laboratory and the spectrum from a star, W. What can we determine about the star from these spectra?

Quick Answers:

1) Elements D and Z



3) i) Star W has the same composition as the laboratory sample ii) Star W is moving toward Earth

Worked Answers: