# ALEX Learning Activity

## Cat-Traption and the Conservation of Energy

A Learning Activity is a strategy a teacher chooses to actively engage students in learning a concept or skill using a digital tool/resource.

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This learning activity provided by:
 Author: Lisa Rhinehart System: Pell City School: Pell City Board Of Education
General Activity Information
 Activity ID: 2010 Title: Cat-Traption and the Conservation of Energy Digital Tool/Resource: Animation for the Conservation of Energy Web Address – URL: http://www.learner.org/workshops/energy/cattraption/ Overview: This learning activity shows how energy is transferred from one object to another and can engage students in a discussion related to kinetic energy. The students will observe an animation and record the movement of the objects much like that of a "Rube Goldberg" contraption that sets a chain of events in motion to complete a task. The students will then answer a series of questions related to the animation and apply concepts associated with the law of conservation of energy. This activity was created as a result of the GAP Project Resource Summit.
Associated Standards and Objectives
Content Standard(s):
 Science SC2015 (2015) Grade: 8 Physical Science 16 ) Apply the law of conservation of energy to develop arguments supporting the claim that when the kinetic energy of an object changes, energy is transferred to or from the object (e.g., bowling ball hitting pins, brakes being applied to a car). NAEP Framework NAEP Statement:: P12.16: Total energy is conserved in a closed system. NAEP Statement:: P8.12a: When energy is transferred from one system to another, the quantity of energy before transfer equals the quantity of energy after transfer. NAEP Statement:: P8.12b: For example, as an object falls, its potential energy decreases as its speed, and consequently, its kinetic energy increases. NAEP Statement:: P8.12c: While an object is falling, some of the object's kinetic energy is transferred to the medium through which it falls, setting the medium into motion and heating it. NAEP Statement:: P8.8a: Objects and substances in motion have kinetic energy. NAEP Statement:: P8.8b: For example, a moving baseball can break a window; water flowing down a stream moves pebbles and floating objects along with it. Unpacked Content Scientific And Engineering Practices:Engaging in Argument from EvidenceCrosscutting Concepts: Energy and MatterDisciplinary Core Idea: EnergyEvidence Of Student Attainment:Students: Apply the law of conservation of energy to develop arguments supporting the claim that when the kinetic energy of an object changes, energy is transferred to or from the object.Teacher Vocabulary:Law of Conservation of Energy Argument Claim Kinetic Energy Energy Transfer SystemKnowledge:Students know: Kinetic energy is energy that an object possesses due to its motion or movement. Changes in kinetic energy may include changes in motion, temperature, or other observable features of an object. When the kinetic energy of an object changes, energy is transferred to or from that object. When the kinetic energy of an object increases or decreases, the energy of other objects or the surroundings within the system increases or decreases, indicating that energy was transferred to or form the object. The Law of Conservation of Energy states that in a closed system, the total energy of the system is conserved and energy is neither created nor destroyed.Skills:Students are able to: Make a claim about a given explanation or model for a phenomenon, including the idea that when the kinetic energy of an object changes, energy is transferred to or from that object . Identify and describe the given evidence that supports the claim. Evaluate the evidence and identify its strengths and weaknesses. Use reasoning to connect the necessary and sufficient evidence and construct the argument. Present oral or written arguments to support or refute the given explanation or model for the phenomenon.Understanding:Students understand that: The law of conservation of energy states that in a closed system, the total amount of energy remains constant and energy is neither created nor destroyed. Energy can be converted from one form to another, but the total energy within the system remains fixed. Energy can be transferred between objects in the system.AMSTI Resources:AMSTI Module: Electricity, Waves, and Information Transfer Alabama Alternate Achievement Standards AAS Standard: SCI.AAS.8.16- Make observations about energy transfers in common everyday occurrences (e.g., bowling ball hitting pins, brakes being applied to a bicycle or car).
Learning Objectives:

1. The student will understand that energy is not created or destroyed but transferred from one object to or from another object.
2. The student will identify changes in kinetic energy.
3. The student will observe the energy transformations of an object.
Strategies, Preparations and Variations