pptx, 1.19 MB
pptx, 1.19 MB

This PowerPoint resource introduces middle school students to the concept of power, how it relates to energy transfer, and the financial cost of electricity usage. The lesson emphasizes practical applications and provides hands-on opportunities for students to perform calculations.

Key learning objectives:

  • Defining power as the rate at which energy is transferred and understanding its unit, the watt (W).
  • Calculating power using the formula: Power (W) = Energy (J) / Time (s)
  • Converting between watts and kilowatts, and using these values to calculate the cost of electricity.
  • Understanding how the power rating of devices affects their energy consumption and cost.

Resource features:
The lesson begins with a starter activity that revisits the concept of energy efficiency and explores energy transfer in everyday devices. Core topics include:

What is Power?
Explains power as energy transferred per second, with relatable examples like comparing two microwaves with different power ratings.
Energy and Power Calculations:
Step-by-step guidance on calculating power and energy usage, with examples such as light bulbs and kitchen appliances.
Watts and Kilowatts:
Covers unit conversions between watts and kilowatts, with practice questions to reinforce understanding.
Cost of Electricity:
Introduces the formula to calculate the cost of electricity:
Cost §=Power (kW)×Time (hours)×Cost per kWh §
Real-life scenarios, such as calculating the weekly cost of using a television, make the concept relatable.

Interactive activities include:

  • Solving problems to calculate energy transfer and power.
  • Completing tables to convert between units and analyze energy consumption.
  • Calculating the cost of using various appliances based on provided power ratings and usage times.

The plenary consolidates learning by reviewing key calculations and discussing energy-saving tips to reduce electricity costs.

File details:
This editable ‘.pptx’ file aligns with middle school science curricula. It includes structured explanations, real-world examples, and practical tasks, making it an essential resource for teaching power, energy, and the cost of electricity.

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A bundle is a package of resources grouped together to teach a particular topic, or a series of lessons, in one place.

Bundle

KS3 Physics Energy Bundle: 7-Lesson Unit

This comprehensive Energy Bundle features seven engaging PowerPoint lessons designed for middle school science students. It introduces key concepts in energy and electricity through interactive activities, real-world applications, and hands-on experiments. Key topics covered: 1. Energy in Food: Learn how food provides energy for daily activities, calculate energy content using food labels, and understand dietary energy needs. 2. Energy in Food Practical: Conduct an experiment to measure energy released from burning different foods, record data, and analyze results through bar graphs. 3. Energy Stores, Transfers, and Conservation of Energy: Explore energy stores (e.g., kinetic, thermal) and transfers, and apply the principle of energy conservation to real-world scenarios. 4. Energy Dissipation and Efficiency: Investigate how energy is wasted (dissipated) during transfers and calculate the efficiency of devices using input and output energies. 5. Power and the Cost of Electricity: Understand power as the rate of energy transfer, practice power calculations, and evaluate the cost of using household appliances based on their power ratings. 6. Making Electricity with Fossil Fuels: Learn how fossil fuels generate electricity, the environmental impacts of combustion, and the concept of renewable vs. non-renewable resources. 7. Energy Resources: Evaluate renewable and non-renewable energy sources, including their advantages, disadvantages, and environmental effects, with engaging activities and real-world applications. Features and benefits: Aligned with middle school curricula: Covers essential energy and electricity topics in an accessible way. Interactive learning: Includes thought-provoking starter activities, practical investigations, and problem-solving tasks. Real-world relevance: Connects theoretical knowledge to everyday applications like calculating electricity costs and exploring energy sustainability. Engaging visuals and structured content: Each PowerPoint is easy to follow, featuring diagrams, charts, and clear explanations. Practical components: Conduct an energy-in-food experiment using accessible lab equipment. Solve energy efficiency and power cost problems. Engage in discussions on sustainable energy solutions. This bundle is an ideal resource for teachers aiming to provide a well-rounded and hands-on introduction to energy and electricity concepts. Updated in January 2025, it ensures students grasp the importance of energy conservation and its role in shaping a sustainable future.

£5.00

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