Explorations: Introduction to Astronomy (Arny), 6th Edition

Chapter 4: Light and Atoms

Questions for Review

1
Why is light called electromagnetic radiation?
2
How are color and wavelength related?
3
What is a photon?
4
Name the regions of the electromagnetic spectrum from short to long wavelengths.
5
What is the difference between emission and absorption in terms of what happens to an electron in an atom?
6
What is the Doppler shift?
7
Which gases in the atmosphere absorb infrared radiation? Which gases absorb ultraviolet?
8
What is meant by the electromagnetic spectrum?
9
What are some of the things astronomers can learn about astronomical objects from their spectra?
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