Motion energy is properly called kinetic energy it is proportional to the mass of the moving object and grows with the square of its speed. This activity focuses on the following Three Dimensional Learning aspects of NGSS:Ĭonstruct and interpret graphical displays of data to identify linear and nonlinear relationships.Īlignment agreement: Thanks for your feedback! Collect data to produce data to serve as the basis for evidence to answer scientific questions or test design solutions under a range of conditions.Īlignment agreement: Thanks for your feedback! Use mathematical representations to describe and/or support scientific conclusions and design solutions.Īlignment agreement: Thanks for your feedback! Predict how the kinetic energy of a system will change if the velocity of an object changes.Ĭonstruct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.Ĭlick to view other curriculum aligned to this Performance Expectation.Predict how the potential energy of a system will change if the mass of an object changes.Predict how the potential energy of a system will change if the height of an object changes.Engineers use their understanding of the energy equations as they create new products, tools, systems and structures that are safe, robust and reliable.Īfter this activity, students should be able to: They learn what engineers know, that energy is influenced by the mass of an object and the height from which that object is dropped.
By gaining exposure to the fundamental energy equations and initial experimental data, students are able to predict the expected outcome of different egg-drops and compare to experimental results. This activity models a real-world situation-asteroids hitting the moon's surface-providing students with an example of how engineers and other researchers often employ simple models to help predict how systems behave. This engineering curriculum aligns to Next Generation Science Standards ( NGSS).Ĭopyright © 2013 Jeff Kessler, University of California Davis This classroom demonstration is also suitable as a small group activity.
They collect and graph their data, comparing it to their predictions, and verifying the relationships described by the equations. Students review the equations for kinetic and potential energy and then make predictions about the depths of the resulting craters for drops of different masses and heights. Because the egg's shape remains constant, and only the mass and height are varied, students can directly visualize how these factors influence the amounts of energy that the eggs carry for each experiment, verified by measurement of the resulting impact craters. The plastic egg's mass is altered by adding pennies inside it.
As a weighted plastic egg is dropped into a tub of flour, students see the effect that different heights and masses of the same object have on the overall energy of that object while observing a classic example of potential (stored) energy transferred to kinetic energy (motion).
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