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Waseley Hills High School BTEC Level 1/2 First Award in Principles of Applied Science Unit 3 Energy and Our Universe Name: Start Date: 4/11/13 Interim Deadline: 22/11/13 Deadline Date:29/11/13 Related Unit content: Learning aim B: Know how electrical energy produced from different sources can be transferred through the National Grid to homes and industry Electric circuits: the need for a complete circuit, electrical symbols (battery, cell, switch, fuse, voltmeter, ammeter, resistor, filament lamp), current, voltage, resistance, construct simple series and parallel circuits, measure current and voltage using meters, use the equation: V = IR, direct current and alternating current. Power supplies: types of batteries, solar cell, simple generators, production of electricity, environmental impact, generation from renewable and non-renewable sources, electrical power and the equation: P = VI, efficiency of electricity generation from different sources, National Grid, step-up and step-down transformers and the reduction of energy losses during transmission. Assignment B Electrical Energy Scenario You are a trainee electrical physicist working for the National Grid. You must have a practical understanding of circuits and be able to carry out calculations. As part of your training you have been asked to promote the company by producing a scientific report explaining how electrical energy is generated and transferred to a factory or a customer’s home. Task 1 Making circuits RESOURCES 1. Build a selection of series and parallel circuits photograph your circuits and then draw circuit diagrams. Design a fact sheet to accompany your diagrams outlining the main electrical symbols used and descriptions of how to measure voltage, current and resistance. (2.B P6) 2. Design an investigation into the resistance in a wire. Record results for voltage and current, draw an appropriate graph and use the graph to make 2 predictions. (2.B P6) Task 2 Generating Electricity 1. Complete the table that outlines 4 ways of generating electricity. You should include examples of generating a.c. and d.c. electricity. (2.B P5) 2. Compare the environmental impact of generating electricity from renewable and non- renewable sources. You could add to the table to do this. (2.B M4) 3. Discuss which method is the most efficient and use calculations to support your arguments. (2.B M4) RESOURCES Task 3 Electricity for all 1. Complete a flow chart showing how electricity is generated in a power station and transmitted to homes or factories. (2.B P7) 2. Include a description of the National Grid and why Transformers are needed. (2.B M5) 3. Use calculations to illustrate why reducing energy losses is important (2.B D4) The grading criteria that this assignment relates to: P5 Describe methods of producing a.c. and d.c. electricity M4 Compare the efficiency and environmental impact of electricity generated be different sources P6 Use V=IR to predict values in electric circuit investigations P7 Describe how electricity is transmitted to the home or industry M5 Assess, in qualitative terms, ways to minimise energy losses when transmitting electricity D4 Assess in quantitative terms, ways to minimise energy losses either when transmitting electricity or when transforming electricity into other forms for consumer applications If you have not achieved the Level 2 criteria, your work will be assessed to determine if the following Level 1 criteria have been met. Criterion To achieve the criteria you must show that you are able to: Unit reference Identify methods of producing electricity from different sources 3 1B.5 Demonstrate building simple series and parallel circuits 3 1B.6 Describe electrical power in terms of voltage and current 3 1B.7 Evidence you must produce for this task; Level 2B.P6 Description Completed practical on series circuits Teacher observation completed for practical 2B.M4 Part 2B.P5 Part 2B.P5 Completed practical on parallel circuits Teacher observation completed for practical Report on series circuits Report on parallel circuits Energy resource table completed for • Fossil fuels • Nuclear power • Solar • Wind • Biofuels • Hydroelectric • Wave • Tidal • Geothermal Definition of electrical power, current and voltage Completed worksheet A.C. generator A description of how A.C. is produced and why most electricity is Checklist 2B.P7 2B.M5 2B.D4 generated this way. Completed worksheet batteries Description of how batteries produce electricity Completed worksheet national grid Diagram of a transformer with a brief description of how it works. Detailed explanation of what transformers do. Completed worksheet on national grid calculations Power rating for the 6 appliances with efficiency and wasted power Energy transformation diagrams for the 3 types of appliances Explanation of how using the more efficient appliances would minimise energy losses Learner Assessment Submission and Declaration This sheet must be completed by the learner and provided for work submitted for assessment. Learner name: Date issued: Assessor name: Completion date: Submitted on: Qualification: BTEC Level 1/2 First Award in Principles of Applied Science Assessment reference and title: Unit 3 Energy and Our Universe , Assignment B Task ref. Evidence submitted Page numbers or description Learner declaration I certify that the work submitted for this assignment is my own. I have clearly referenced any sources used in the work. I understand that false declaration is a form of malpractice. Learner signature: ________________________________Date:_______________ Summary assessor’s feedback Signed: Dated: Internal verifier’s comment Signed: Dated: