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North East School Division Unpacking Outcomes Unpacking the Outcome Demonstrate and analyze characteristics Outcome (circle the verb and underline the qualifiers) CE 9.1 Demonstrate and analyze characteristics of static electric charge and current electricity, including cultural and historical understanding. KNOW Transfer of static electric charges - charging by friction, charging by conduction, charging by induction, and electrostatic discharge Properties of static electric charges Technological problem solving process Related technologies - air filters, fabric softeners, lightning rods, automotive painting, plastic wrap, grounding straps, Van de Graaff generator, and photocopiers Examples of contributors to study - Thales, Robert Boyle, Benjamin Franklin, Michael Faraday, Nikola Tesla, Georg Ohm, Alessandro Volta, André-Marie Ampère, James Wimshurst, and Robert Van de Graaff Electric minimizing technologies grounding straps, lightning rods, grounded plugs, fuses, and circuit breakers How to design and safely conduct an investigation Particle theory of matter, Electron transfer Other vocabulary – electron, static electrical charge, discharge, current electricity, resistance, conductor, insulator,, superconductor, complete circuit, closed circuit, open circuit, short circuit, flow of charge, particle, transfer, electroscope UNDERSTAND BE ABLE TO DO That an understanding of static electricity and current electricity is important to a variety of careers and situations Electricity can be both powerful and useful as well as dangerous There are technologies designed to minimize the danger of electricity The particle theory of matter and electron transfer can explain the flow of charge in an electrical circuit That the transfer of electricity can be viewed as a system with each part connected That electricity is a form of energy Pose questions to investigate related to static electric charge and current electricity. Gather evidence for the transfer of static electric charges, and create written, visual, and/or dramatic representations of those processes. State the properties of static electrical charges. Examine how the importance of lightning in First Nations and Métis culture is conveyed through stories and legends. Use a technological problem-solving process to design, construct, and evaluate the reliability of a device to detect static electrical charges, such as an electroscope. Explain, with reference to electron transfer, the production of static electrical charges in some common materials such as flannel, fur, wood, plastic, rubber, and metal. Describe the operation of technologies that have been developed based on scientific understanding of static electric charge and discharge Outline the contributions of people from various cultures to modern understanding of static electric charge and current electricity and past and present careers that require an understanding of static electric charge and current electricity. Identify dangers to the human body associated with static electric charge and discharge, and current electricity, and discuss how technologies are designed to minimize such dangers. Design and safely conduct an investigation to determine the resistance of various materials such as copper wire, Nichrome wire, graphite, rubber tubing, wood, glass, distilled water, and ionic solutions to electric current. Differentiate between conductors, insulators, and superconductors in electric circuits. Differentiate between a complete circuit, a closed circuit, an open circuit, and a short circuit. Describe the flow of charge in an electrical circuit based on the particle theory of matter and electron transfer. ESSENTIAL QUESTIONS Why is understanding static electricity and current electricity important? How is electricity beneficial? How is it dangerous? How can we reduce the danger associated with electricity? How does the particle theory and electron transfer explain the flow of charge in a circuit? How is electricity part of a system? What is electricity? How is electricity energy? How has electricity been viewed historically? How is it understood culturally? North East School Division Unpacking Outcomes Unpacking the Outcome Analyze relationships Outcome (circle the verb and underline the qualifiers) CE 9.2 Analyze the relationships that exist among voltage, current, and resistance in series and parallel circuits. KNOW UNDERSTAND BE ABLE TO DO Ohm’s Law – I = V/R Vocabulary – voltage, resistance, current, switch, resistor, variable, parallel circuit, series circuit, ammeter, voltmeter, multimeter, instrument, tabular form, circuit diagram, energy source, load, testable form Ways to model characteristics of circuits How to use ammeter, voltmeter and multimeter safely and accurately (How to read) How to construct circuits How to display data in tabular form and graphically Standard circuit diagram symbols What we mean by “testable form” It is important to use precise language in science and technology in order to enhance understanding and clarify meaning Switches and resistors play a strong role in circuits Even when we use scientific instruments safely and carefully, there can still be sources or error. Acknowledging these sources is part of good science. Displaying data is an important step in drawing conclusions and recognizing patterns Ohm’s Law allows us to calculate unknown quantities in electrical circuits Models help us explain phenomena and demonstrate understanding Questions in science are best worded in testable form Demonstrate the importance of using precise language in science and technology by formulating operational definitions for voltage, resistance, and current. Demonstrate the role of switches and variable resistors in series and parallel circuits, and identify practical examples of switches and variable resistors in daily life. Model the characteristics of series and parallel circuits using analogies or visual and/or physical representations. Use an ammeter, voltmeter, and/or multimeter safely and accurately to measure current and voltage of a variety of student-constructed series and parallel circuits, and identify potential sources of error in instrument readings. Display data from the investigation of voltage, current, and resistance in series and parallel circuits in tabular form and graphically. Calculate values of unknown quantities in electric circuits using Ohm’s Law (I = V/R). Model, using appropriate standard circuit diagram symbols, series and parallel circuits that include an energy source, one or more switches, and various loads designed to accomplish specific tasks (e.g., household lighting, flashlight, electric fan, blender, coffee maker, toy vehicle, and automotive lighting). Rephrase questions related to electric circuits in a testable form (e.g., rephrase a question such as “Why do we use parallel circuits in household wiring?” to “How do the voltage and current in a series circuit compare with those in a parallel circuit?”). ESSENTIAL QUESTIONS Why is precise language so important in science and technology? What role do switches and resistors play in circuits? How can there still be errors when we use instruments carefully and safely? Why are errors so important in science? Why display data? How? How is Ohm’s Law useful? Why are models so important in science? How can they help me here? Why are questions in testable form so important in science? North East School Division Unpacking Outcomes Unpacking the Outcome Assess principles Assess costs Assess efficiencies Outcome (circle the verb and underline the qualifiers) CE 9.3 Assess operating principles, costs, and efficiencies of devices that produce or use electrical energy. KNOW UNDERSTAND BE ABLE TO DO Devices that use or produce light, heat, sound, motion, and magnetic effects - toaster, light bulb, thermocouple, oven, refrigerator, television, hair dryer, kettle, fan, electric blanket, and remotecontrolled toy vehicle How to use a technological problem-solving process How to work well with others Vocabulary – energy transformation, prototype, efficiency, energy-converting, power rating, sustainable, discrepancy, social, consumption, principle Make calculations using the formula Cost = Power X Time X Rate Examples of needs of society, self and environment as related to energy consumption Prototypes are experimental models Common energyconverting devices are not 100% efficient Our current energy use is not sustainable A number of factors impact energy use in a variety of settings Decisions about energy use should take into account environmental, social and personal needs – we often make uninformed decisions Many energy-based decisions have advantages and disadvantages Explain the energy transformations involved in devices that use or produce light, heat, sound, motion, and magnetic effects Use a technological problem-solving process to collaboratively design, construct, and evaluate a prototype of an electric motor that meets student-identified criteria or solves a student-identified problem. Calculate the efficiency of common energy-converting devices and suggest reasons why the efficiency is always less than 100%. Interpret the energy efficiency rating of household electrical appliances and calculate their costs of operation in Saskatchewan over a given time by identifying the power rating and using the formula Cost = Power x time x rate. Evaluate the design of a household electrical appliance on the basis of criteria such as function, cost, and impact on daily life and the environment, and suggest alternative designs that are more sustainable. Identify, and suggest explanations for, discrepancies in variations in the monthly costs of electrical energy for a household or business. Make informed decisions about personal use of devices that use electrical energy, taking into account environmental and social advantages and disadvantages. Propose a course of action to reduce the consumption of electrical energy in Saskatchewan, taking into account personal, societal, and environmental needs. ESSENTIAL QUESTIONS Why build prototypes? How are they used in science? Why are energy-converting devices not 100% efficient? Why is our current energy use not sustainable? Where is this an even bigger problem and why? How do individuals and companies make energy decisions? How can I make energy decisions that are environmentally, socially and personally responsible? What are the advantages and disadvantages of various energy decisions? North East School Division Unpacking Outcomes Unpacking the Outcome Critique impacts Outcome (circle the verb and underline the qualifiers) CE 9.4 Critique impacts of past, current, and possible future methods of small and large scale electrical energy production and distribution in Saskatchewan. KNOW UNDERSTAND BE ABLE TO DO Examples of technologies developed to produce and store electrical energy - electrochemical cells, wet cells, dry cells, and batteries Examples of large-scale methods of electrical energy generation hydroelectric dams, coal and natural gas-fired plants, wind turbines, solar energy, geothermal, biomass, and nuclear plants Alternate energy sources geothermal, biomass, clean coal, and co-generation. Vocabulary – production, distribution, traditional land, traditional life, operating principles, efficiency, lifespan, industry, primary cells, secondary cells, transfer, conversion, transformer, perspective, stakeholder, alternative, controversial Ways to illustrate concepts That technological developments related to the production and distribution of electrical energy have affected and continue to affect self and community Technologies have changed over time Energy production and distribution has controversial issues associated with it Our perspective impacts the information we impart Energy production, whether large or small scale, has impacts within our province (and elsewhere) Provide examples of how technological developments related to the production and distribution of electrical energy have affected and continue to affect self and community, including electricity use on reserves, traditional lands, and traditional life in Saskatchewan. Compare the operating principles, efficiency, lifespan, and safety, of past and current technologies developed to produce and store electrical energy, in the home, business, and industry. Discuss the merits of primary and secondary cells and explain why secondary cells are not always appropriate to meet certain needs for electrical energy. Illustrate and describe the transfer and conversion of energy from a typical generating station to a home in Saskatchewan, including the role of transformers. Assess the efficiency and impact of large scale versus small scale electrical energy distribution systems for home, business, agricultural, and industrial applications. Describe scientific, technological, societal, and environmental perspectives related to past, current, and proposed large-scale methods of electrical energy generation in Saskatchewan Evaluate evidence and sources of information created by different stakeholders related to various methods of electrical energy production in Saskatchewan, including alternative energy sources ESSENTIAL QUESTIONS How have technological developments related to the production and distribution of electrical energy affected us and our communities? How have electrical technologies changed over time? Why is energy production controversial? What are the issues? How does our perspective impact the information we share? How does this apply to energy production? What is the impact of small and large scale energy production and distribution in Saskatchewan?