Tuesday, August 30, 2011

8/30 Bloomberg

Today in Honors Physics 3rd period we turned in our book treasure hunt worksheet. After that we took a classroom procedures quiz. Following the quiz Mrs. Coats- Haan checked to see if we had book covers on our textbooks. Later Mrs. Coats- Haan demonstrated Bernoulli's Principle with a toy crocodile that had floating eyes when blow into. Next Hunter Miller also demonstrated Bernoulli's Principle by blowing air into a long plastic bag with holes at each end, in attempt to make air come out the other end. This demonstrated Bernoulli's principle because Hunter blew into the bag the correct way and was able to put not only his own air into the bag but also the air around the opening because the lower pressure of his fast moving air caused the outside air to follow. Afterward the entire class was given plastic bags and, like Hunter, attempted to make air come out the other side. Then Mrs. Coats- Haan went over instructions for making a kite, which we proceeded to work on with the other people at our table. The process in which the groups designed the kite required math skills, and patience so as to not make the kite lopsided. Most if not all tables did not finish the kite and will continue to work on it tomorrow and hopefully fly it if the weather and time permits.

QOD: Give an example of Bernoulli's Principle in action.
Example: An airplane wing is made so that the top is curved and the bottom is flat. The air traveling on the top of the wing travels faster than the air underneath. The faster air has a lower pressure, so the higher pressure on the bottom of the wing causes the plane to go up. When the plane goes fast enough this lift is more powerful that the downward gravitational force..

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