Day 73 – How a Refrigerator Works

Wed Dec. 18, 2013

Day 73

Chemistry 1 – First we took a quiz on Energy Bar Graphs.  Students then used the NOVA website Anatomy of a Refrigerator to study a real life application of energy flow.  I have them answer a few questions and draw a couple of Bar Graphs to analyze the energy at different points and in different objects in the fridge.

Physics 1 – We discussed and struggled with some of the concepts of the Force of Friction.  The one issue we were able to resolve was the fact that Ff is dependent on the Normal Force and not the mass or weight (Fg) of the shoe.  I demonstrated this by placing a block on a ramp.  As I tilted the ramp upwards students agreed that the mass and Fg of the object were not changing, but the Normal force was.

Chemistry 2 – I found an old Organic Chemistry Scent Identification Kit in my stock room.  The kit is from Flinn and it contained cards with the structure of each compound as well as samples of each compound in small vials.  I gave the class a list of the possible scents, the structures and the vials to smell.  The students job is to name the scent in each vial as well as to identify which functional groups are present in each structure.


About bradwysocki

I teach high school Chemistry and Physics using Arizona State University's Modeling Method. The school I teach in is Bloomer HS in Northwest Wisconsin. I've been using the Modeling Method for 7 years now and have just recently begun using Standards Based Grading as a way to assess my students learning.
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