![]() Make sure they understand that air is around them all the time and that the air has pressure. Start by revisiting with students the Lesson 1 concepts. 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. Plan an investigation individually and collaboratively, and in the design: identify independent and dependent variables and controls, what tools are needed to do the gathering, how measurements will be recorded, and how many data are needed to support a claim.Īlignment agreement: Thanks for your feedback! Science knowledge is based upon logical and conceptual connections between evidence and explanations.Īlignment agreement: Thanks for your feedback! ![]() This lesson 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 Use Bernoulli's principle to explain what lift means with respect to airplanes.Describe how four key forces (lift, weight, thrust, drag) act on airplanes during flight.Before testing their wing designs on real airplanes, engineers experiment with variations in wing shapes in wind tunnels to see how they perform in moving air.Īfter this lesson, students should be able to: This difference in pressure causes the wing to rise engineers call this lift. Since we know from Bernoulli's principle that faster moving air has less pressure, the air pushes more on the bottom of the wing than on the top of the wing. ![]() They design wings so that the air moves faster over the top of the wings than under the wings. With their understanding of Bernoulli's principle, engineers manipulate air pressure to create lift. This engineering curriculum aligns to Next Generation Science Standards ( NGSS). This is the first of four lessons exploring the four key forces in flight: lift, weight, thrust and drag. Airplane wings create lift by changing the pressure of the air around them. Students revisit Bernoulli's principle (presented in lesson 1 of the Airplanes unit) and learn how engineers use this principle to design airplane wings. ![]()
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