Re: [Phys-l] The Cause of Global Warming. What's the Proof the hypothysises and models are right?

[Leanna Aker <l.aker@mac.com>]

How do you respond to a 9th grader (or an adult for that matter), who  
will then come back and say "but there are cycles of thawing and  
refreezing that explain those images."  Is there a good graph that   
someone has at his/her fingertips that shows cyclical change and then  
has change in recent years superimposed upon it?


Thanks so much,
Leanna B. Aker
Science Teacher
Columbia Junior High School
253-517-1600 X27210
laker@fife.k12.wa.us
http://www.fifeschools.com/cjh/staff/laker/index.htm
-----
Happy is he who gets to know the reasons for things.
    Virgil (70-19 BCE) Roman poet.



> Message: 13
> Date: Sat, 19 May 2007 19:26:00 -0700
> From: "Shapiro, Mark" <mshapiro@Exchange.FULLERTON.EDU>
> Subject: Re: [Phys-l] The Cause of Global Warming. What's the Proof
> 	the	hypothysises and models are right?
> To: "Forum for Physics Educators" <phys-l@carnot.physics.buffalo.edu>,
> 	"Forum for Physics Educators" <phys-l@carnot.physics.buffalo.edu>
> Message-ID:
> 	<4E6CE19EA6702E4196DFF5ED79C73E83267D1F@SFEXCH2.AD.FULLERTON.EDU>
> Content-Type: text/plain;	charset="iso-8859-1"
>
> I suggest watching the following presentation for a good discussion  
> of just how good the evidence is for global warming:
>
> http://video.csupomona.edu/CampusForum/NaomiOreskes-245.asx
>
> You might also want to take a look at:
>
> http://irascibleprofessor.com/comments-04-22-07.htm
>
> Mark