1 A) superclusters B) variable galaxies C) super galaxies D) solar systems 2 A) distance from the Milky Way B) shapes C) luminosity D) pulsating variable stars 3 A) the inward force of gravity B) the momentum of the galaxies C) the outward force of gravity D) the critical density of the universe 4 A) It was slowing down, but now it is speeding up. B) It has always been slowing down. C) It was speeding up, but now it is slowing down. D) It has always been speeding up. 5 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078746361/561701/185_blkhls_ca_311c.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (13.0K)</a>]]> A) it's too small B) it's not in the center of a galaxy C) it's too big D) it has too much gas 6 A) pulsating B) visible C) spinning D) invisible 7 A) a red giant B) a Population I star C) a Population II star D) made 99.9 percent of hydrogen and helium 8 A) active galactic nuclei B) dwarf ellipticals C) globular clusters D) black holes 9 A) variable stars B) the steady-state theory C) the Hubble constant D) the Milky Way 10 A) gamma rays B) a supermassive black hole C) a supernova D) gas clouds 11 A) sphere B) straight line C) oval D) disk 12 A) the steady-state theory B) the inflationary universe model C) the theory of evolution D) the Big Bang theory 13 A) central bulge B) black holes C) halo D) spiral arms 14 A) quasars B) radio galaxies C) the inflationary universe model D) The universe is expanding. 15 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078746361/561701/183_galaxy_ca_310c.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (19.0K)</a>]]>
A) B B) C C) D D) A 16 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078746361/561701/183_galaxy_ca_310c.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (19.0K)</a>]]> A) B B) A C) D D) C
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