Class on Thursday, October 23

Today Dr. E. started by asking us if we had any questions. After this, she discussed velocity and pressure and used the example of an airplane wing and she drew a picture for us to help us understand how it works. The picture let us know that at the top of the wing where it is slightly rounded, there is a slower velocity and decreasing pressure and at the bottom of the wing there is a higher velocity and increasing pressure. This was interesting to see to be able to comprehend it. After this, we talked about density and viscosity. We were able to see first hand what density is: Dr. E. had us pass around an air-filled bouncy ball and a bowling ball. It was easy to tell that the bowling ball was more dense than the bouncy ball. After we were done discussing density, we did an activity about pressure. We split up into groups and went into the hallway to determine what pose would apply the most pressure on the floor. In our group, Janelle was the one to stand on the paper. We decided to have Janelle stand on one foot since there would be less area that way. It ended up that we did not win with the most pressure, but we did pretty good. This activity was a great way to see first-hand how area affects pressure. This confirmed that the highest pressure occurs with smallest area and the lowest pressure occurs with the biggest area. This activity would be a fun one to do with my future students.