=====
Fall 2007  Astr 10  10/15  Lecture 2.8  
=====
"There are certain events which to each man's life 
are as comets to the earth, seemingly strange and 
erratic portents; distinct from the ordinary lights 
which guide our course and mark our seasons, yet 
true to their own laws, potent in their own influences."
--Edward George Earle Lytton Bulwer-Lytton

TODAY: COMET AND COMET CLOUDS
Comets: some assembly required
     Gourmet recipe
     Make-at-home recipe
Comet reservoirs: Kuiper belt and Oort cloud
     (Chaisson/McMillan, _Astronomy: A Beginner's Guide 
     to the Universe, 4/e_, Fig. 4.12)
In-class activity 14 (*.pdf)
Pluto = planet?
     Public message paid for by "The Friends of Pluto"
          (Worth1000.com Save Pluto photoshop contest)
     Comparison chart
          Planets, dwarf planets, satellites, and small solar  
          system objects (asteroids and Kuiper belt objects)
          (www.johnstonsarchive.net)

CPS activity: Midterm 2 review
     You must use your own clicker for participation credit

NEXT TIME 
Midterm 2 Announcements
     Wednesday, 10/17, 6:30-7:20 PM
     Closed-book, closed-notes
     Ten multiple-choice questions = 30 points
          No work needs to be shown; no partial credit
          Five questions from Q4.x, Q5.x, Q6.x learning goals
          Five questions from M2.x learning goals
     Three short-answer questions = 45 points
          Partial credit given for relevant discussion
          Taken from Q4.x, Q5.x, Q6.x, M2.x learning goals
     No scantrons; circle/write answers directly on Midterm
     
     (Multiple-choice: three questions from Fall 2007 Quizzes 4-6, 
       one question from archives;
      Short answer: one question from previous semester Midterm 2 archives)
     
(Lecture on new Q7.x material follows midterm)