Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Time for B’s principle pre-quiz! (Anticipatory Set) 1. As the speed of a fluid increases so does the pressure. 2. During Aircraft flight three forces work on the plane. 3. You spell Bernoulli B-E-R-N-O-U-L-I 4. There is more pressure on the top of a wing than the bottom. 5. The air resistance on a plane is called lift. 6. Airplane wings are not designed to use B’s principle. What is Bernoulli’s Principle? By: Kortney Hungelmann-Skiba and Billy Sanborn Vocabulary ► Bernoulli’s principle states that as the speed of fluid increases, it’s pressure decreases. ► So when it is poring out, you can’t feel it as much as when it is just drizzling out. Example (Guided practice) Get in to your groups: Group 1. 21, 3, 20, 19. Group 2. 5, 2, 1, 25. Group 3. 9, 17, 10, 22. Group 4. 7, 16, 13, 15. Group 5. 24, 12, 4, 26. Group 6. 18, 8, 11, 6. Send a getter up to the table to receive the materials (bottle of water and green tray). Each person should slowly dump a little water on your hand. After that each person should dump a little more water on their hand, just faster. Observe the pressure each dump puts on your hand. According to Bernoulli’s Principle when you slowly dump the water it should put more pressure on your hand than when you dump the water really fast. Your group has 10 minutes! Bernoulli’s principle in relation to flight Airplane wings are designed to use Bernoulli’s principle. Air flows over the top and the bottom of the wings. Since airplane wings are curved at the top, the air that goes over the wing speeds up. The air pressure at the bottom of the wing pushes up (this is lift). This helps the plane stays in the air. According to Bernoulli’s principle there is less pressure at the top of the wing than the bottom. Bernoulli’s principle in relation to flight part 2 ► ► ► ► There are three forces that help make the plane fly during aircraft, lift, thrust, drag. The force at the bottom of the planes wings is called lift. This force pushes the wings ups. In regular flight the lift is equal to the weight of the plane. Thrust is the forward force on the plane. When the plane picks up speed the air that flows around the wings helps it stay in the air. The planes engine also provides thrust. Drag is the force of air resistance over the wings, this slow the plane down. Airplane designers use the streamlining process this process reduces drag. There for there is less pressure on the top of the wing than the bottom of the wing because the air on the top goes faster than the air on the bottom. This causes the plane to rise! Time for B’s principle post-quiz! (Assessment) 1. As the speed of a fluid increases so does the pressure. 2. During Aircraft flight three forces work on the plane. 3. You spell Bernoulli B-E-R-N-O-U-L-I 4. There is more pressure on the top of a wing than the bottom. 5. The air resistance on a plane is called lift. 6. Airplane wings are not designed to use B’s principle.