Sunday, October 14, 2012

Week 5 Blog


On Monday we started off the class with going over the Aluminum Foil Lab. We came to a consensus of how thick the foil was and it was 0.0014. Then we learned that the heavy-duty foil's thickness 0.0022. To figure out how the particle diagrams were related we took 0.0022/0.0014, which came to about 1.57. From there we make a ratio of regular foil to heavy duty foil, our ratio was 1:1.5, but you can't have a half of a particle so we multiplied 1.5 times 2 to get 3. We also had to multiply 2 and 1, we then got the ratio 2:3. This ratio means that the regular foil have 2 layers of particles for every 3 layers of particles of heavy-duty foil. After we figured each particle size was 0.0007 cm. We got this number by dividing the foil's thickness by the number of layers. For example 0.0022/3, equaled about 0.0007. When we finally finished our consensus on the foil's thickness, we started planning for the density of a student project. We got the main points down, like that we'd have to have a student go under water and we have to measure the water that was displaced. On Tuesday we continued with our discussion, my group came up with the ideas. One of them was to use the garbage can fill it to the very top with water as planned, but to put it inside of the kiddy pool and measure the water that was inside the kiddy pool. That is after the student went all the way under the water. We then said we could collect the water in milk jugs, the gallon, and from there count how many milk jugs were filled and then we'd do the math. Our idea was pretty exact to the plan we used except we used pop bottles, the one liter ones. We then picked one girl and one boy from the class. They were Shannon and Thomas. On Wednesday we started off the class picking jobs and getting the lab set up. The garbage can was inside the kiddy pool and we filled it to the top with water from the emergency shower. We then had people move both things away from the shower and some water emptied into the pool but that was ok because it would have been displaced anyway. Shannon went first she got into the garbage can very slowly and went under water, the water then displaced into the kiddy pool. We then started gathering water into the pop bottles. We had to get every last drop of water. We then recorded how many pop bottles we filled up. Before Thomas could go we had to fill the garbage can to the top again. We then we repeated the same steps as we did for Shannon's density. On Thursday, we recorded all the data, put pictures and data into the presentation. On Friday, we took our assessment. I understand the unit, but for me the assessment was really hard. I tried my best on it but I defiantly need more practice.
 Sorry I couldn't rotate them when I inserted them in.



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