This PowerPoint resource offers an engaging and practical lesson to help students understand how energy is transferred, dissipated, and conserved in different systems. It is ideal for high school physics classes, particularly those focusing on energy concepts and applications.
Key learning objectives:
- Distinguishing between closed and open systems and describing changes to energy stores within them.
- Investigating the effect of friction from different surfaces on energy dissipation and work done.
- Understanding the principle of conservation of energy and how energy dissipation leads to inefficiencies in real-world systems.
Resource features:
The lesson begins with a starter activity that reviews the principle of conservation of energy, energy stores, and the concept of energy dissipation. Students are introduced to the differences between closed and open systems, with clear explanations and examples, such as pendulum motion in the absence or presence of air resistance.
Key topics include:
- How friction and other forces cause energy to transfer to the thermal energy store of the surroundings.
- Real-world examples of energy dissipation in systems, such as heat generated by mechanical friction.
- Hands-on investigation measuring the force required to pull an object across surfaces like wood, sandpaper, and carpet, highlighting how surface properties affect energy dissipation.
Students record their results in a provided table, analyze trends in friction and work done, and calculate uncertainties. Reflection questions prompt critical thinking about experimental outcomes and the efficiency of energy use in practical systems.
File details:
This editable ‘.pptx’ file aligns with physics curricula and supports theoretical and practical learning. It includes clear visuals, hands-on activities, and problem-solving tasks, making it an invaluable resource for teaching energy dissipation and conservation.
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£2.00