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1.  We spent the first ten minutes of class covering student questions and comments about Mr. Kleiner’s decision to leave at the end of the semester.

2.  We went over the problems from the chapter 22 homework from last week.  We discussed in particular:

a.  why metal objects feel colder than other objects in a room (conduction)

b.  why the retina appears black

c.  what is terrestrial radiation

homework: keep working on your global warming projects

The votes are in for best rube goldberg videos from each class.  These winning teams will receive 8 extra points on the test portion of their grades.

Period 1: Video1, Video7

Period2: Video10, Video3

Period3: Video6, (Video4 and Video1 tied for second so four points each)

Period4: Video7 and Video5

The global warming project is due Friday, December 5 at the beginning of class.  The entire project must be created on 8.5 x 11 paper and stapled together into a packet.  Be good to the environment and use both sides of your 8.5 x 11 paper.  The project should contain the following three items:

(8 points) A diagram that you create to demonstrate the concept of global warming.  The diagram can be hand drawn or created using a computer graphics program, but you must create it yourself.  Do not simply find a diagram on the internet and copy and paste it!  The diagram must contain the following items at a minimum: sun, earth, atmosphere, CO2, solar radiation, terrestrial radiation, at least 3 sources of greenhouse gases.

(2 points) An article about global warming that you feel is particularly interesting and informative.  The article can be pro or anti global warming.  The article can focus on the entire concept of global warming, or it can focus on a small subset of the problem, such as car emissions.  It is up to you.

(5 points) A written explanation of why you chose the article and why you think it is interesting or important to share with others.

(5 points) At least 3 pictures that represent global warming.  “Before and after” pictures are highly recommended.  For example, you could show a picture of a glacier 30 years ago and a picture of that same glacier today.  Below each picture should be a caption that explains what the picture is, and your caption should be descriptive (don’t just say glacier, for example!)

Grading:  The project is worth 20 homework points, which is equivalent to about 6 regular homework assignments.

To get full credit, your diagram should contain all of the required items, it should be clean and professional looking.

Your article will likely get full credit unless it is really off topic or inappropriate.

The explanation of your article will get full credit based on how thought provoking, sincere, and relevant your explanation is.  You will likely get most or full credit as long as your explanation is well thought out and reasonable.

Your pictures will get full credit based on their quality, the detail in the captions, and their overall relevance to the project.

1.  We discussed how convection causes winds between land and ocean and keeps the winters and summers in the bay area mild

2.  Mr. Kleiner announced that he was leaving at the end of the semester.  Mr. Kleiner loves teaching, but he has other commitments in his life to pursue, one of which is http://singularityhub.com. Mr. Kleiner will miss everyone and he hopes you will all keep in touch with him!

3.  We watched the following video:

homework: get started on the global warming project, which will be described in the next post

1. We watched the rube goldberg videos from each period and students voted on their two favorite videos. Mr. Kleiner will tally up the votes and announce the top two videos from each class soon.

2. Mr. Kleiner showed a demonstration of convection. A tube of water with food coloring at the bottom was put on top of a bunsen burner. The heat from the flame caused convection currents to form in the water and these currents were visible because of the food coloring.

3. Mr. Kleiner explained how a bunsen burner is very hot above the flame, but very cool even just a millimeter to the side of the flame because of convection. Students were able to witness this themselves by experimenting with the bunsen burner.

homework: eat turkey or tofurkey

1.   We took a quiz on chapter 22

2.  Mr. Kleiner gave a boring lecture on convection, conduction, and radiation.  The class was shocked to learn that every person and every thing is emitting electromagnetic waves constantly.

homework: problems 2, 4, 5, 7, 8, 15, 18, 22, 25, 31, 32, 33 from chapter 22

1.  We went over the problem set from our homework assignment.

homework: Read all of chapter 22, reading quiz tomorrow

1.  Students filled out the Rube Goldberg Peer Evaluation forms

2.  Mr. Kleiner stated that the Rube Goldberg videos are now on the class website.  If your team’s video is not on the website please email Mr. Kleiner right away.

3.  We went over the problems from last night’s homework and further developed our understanding of heat and temperature.

homework: problems 24, 25, 29, 30, 31, 32, 34, 35, 37, 41, 44, 54, 60, 61, 62, 65 from chapter 21

1.  We took a quiz on sections 21.6 to 21.9 in the book

2.  We watched Rube Goldberg presentations for the entire period

homework: problems 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 15, 19, 20 from chapter 21

1. We took a quiz on 21.1 to 21.5

2.  We watched rube goldberg presentations for the rest of the period

homework: read 21.6 to 21.9, be ready for quiz tomorrow

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