Astro 120: Exam 3 Sample: answer key

 1-b       11-c      21-d   
 2-d       12-a      22-d
 3-d       13-d      23-c
 4-c       14-c      24-a
 5-c       15-a      25-b
 6-e       16-e      26-b
 7-c       17-d
 8-b       18-d
 9-d       19-b
10-c       20-b