10/23 Class

Today class began with Dr. Ezrailson talking about density and pressure. She discussed the shape of airplane wings and how the curved shape of the top of the wing causes slower valocity and the straight bottom of the wing causes a higher velocity. There is pressure pushing up towards the wing and down on the wing. With density, we learned that the more mass in an object the more dense it is. We also learned that higher pressure = smaller area, which was discovered by an activity that we did. We were to get in groups and try to exert the most pressure on a large piece of butcher's paper using our bodies. My group decided that standing on one foot would create the most pressure. We then traced my foot on the paper and measured it in centimeters. We then calculated that number with my weight to find out the pressure I was exerting on the paper. We also discussed ways in our daily lives that involve pressure and density. Snowshoes were discussed becuase they increase the body's surface area so one does not sink in deep snow. One student discussed how massages involve pressure whether you are using your thumbs or your entire hand. I think that the activity involving the large paper and using a student's body to make the highest pressure would be a fun and engaging activity for future students.