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Astronomy
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Chapter 24
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Worksheet
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Atomic Spectra
1. From looking at Figure 24-11 in your book, draw the Lyman series and the Balmer series on the same
wavelength axis, that is, on a horizontal straight line labeled in angstroms every 500 Å from 500 to 7,000 Å.
(1)
2. Why is the Balmer series the most observed spectral series of atomic hydrogen? (0.5)
3.
Describe the appearance and the differences between a spectral continuum, an absorption spectrum, and
an emission spectrum? (1.5)
4.
How is it that stars are emitting enormous amounts of energy, yet we identify them based on their
absorption lines? (0.5)
5. Compare and/or distinguish between the Sun's spectrum and the spectrum of a B star. (0.5)
6. Why aren't neutral Helium lines prominent in the solar spectrum? (0.5)
7. Why don't we see strong molecular lines in the solar spectrum? (0.5)