Building Energy Transfer Rube Goldberg Machines

Grade 11 Physics Energy Transformations & Conservation Hands-on Engineering Challenge

What is a Rube Goldberg Machine?

A chain reaction contraption Performs simple tasks through complex steps Named after cartoonist Rube Goldberg Perfect for demonstrating energy transfer

Types of Energy in Motion

{"left":"Potential Energy: Stored energy due to position or condition\nKinetic Energy: Energy of motion\nGravitational potential energy increases with height","right":"Kinetic energy increases with speed and mass\nEnergy transforms but is never created or destroyed\nFriction and air resistance cause energy loss to heat"}

Design Challenge

Groups of 3-4 students Build a machine with at least 3 energy transfer steps Start with potential energy, end with kinetic energy Use provided materials creatively Document energy transformations at each stage

Energy Transfer Examples

Critical Thinking

Where might energy be 'lost' in your machine? How can you minimize energy loss? What happens to the 'lost' energy?

Testing and Refinement

Test your machine multiple times Identify failure points and energy losses Make adjustments to improve energy transfer Document successful energy transformations Prepare to explain each step to the class

Conservation of Energy

"Energy cannot be created or destroyed, only transformed from one form to another." - First Law of Thermodynamics