Ask students to predict what will happen when they blow into the tent.Have students fold a piece of paper (lengthwise) in half and make a paper tent.Gather materials and make copies of the Fun with Bernoulli Worksheet. Because this equation is always constant for a system, if the velocity increases, the pressure must decrease! Where P is the pressure, v is the velocity and g is gravity. Engineers use their understanding of pressure differences to make airplanes fly.įor a system with little change in height, Bernoulli's equation can be written: On a curveball, the difference in pressure causes the ball to move sideways. Bernoulli's principle tells us that these differences in velocity mean differences in pressure exist as well. Different air velocities are present on different parts of a curveball as well as on the different parts of an airplane. When talking about baseball, why does a curveball curve? Why does an airplane fly? The reasons can be found in Bernoulli's principle, which states that the faster a fluid moves the less pressure it exerts.
International Technology and Engineering Educators Association - Technology In order to share information with other people, these choices must also be shared.Įxplanations of stability and change in natural or designed systems can be constructed by examining the changes over time and forces at different scales. For any given object, a larger force causes a larger change in motion.Īlignment agreement: Thanks for your feedback! All positions of objects and the directions of forces and motions must be described in an arbitrarily chosen reference frame and arbitrarily chosen units of size. The greater the mass of the object, the greater the force needed to achieve the same change in motion. The motion of an object is determined by the sum of the forces acting on it if the total force on the object is not zero, its motion will change. Science knowledge is based upon logical and conceptual connections between evidence and explanations.Īlignment agreement: Thanks for your feedback! This activity focuses on the following Three Dimensional Learning aspects of NGSS: Plan an investigation to provide evidence that the change in an object's motion depends on the sum of the forces on the object and the mass of the object.Ĭlick to view other curriculum aligned to this Performance Expectation
0 kommentar(er)
