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# Topic 3 Year 7 physics

 Physics Topic Electromagnetism 1 No of lessons 10 When is it happening Year 7 Term 3 What will students learn Students need to use circuit symbols to construct series and parallel circuits. Identify the differences between electrical conductors and insulators. The link between potential difference, current and resistance. The reason why some objects become charged and the reason why charged objects experience a force in an electric field. Use and evaluate models of how electric circuits work. Key Knowledge that students should know at the end of 'Topic' This is the knowledge that students will meet for the first time in this topic Circuit symbols. Electrical insulators and conductors. Definition of potential difference in terms of energy transfer, measured in volts, how to draw a circuit diagram to measure voltage in both series and parallel circuits. How to apply and rearrange R= PD/ I (V=IR, Ohms law). How resistance and PD affect the way components work. How resistance affects current in a circuit. Describe current as the flow of electrical charge, measured in Amperes and how current behaves in series and parallel circuits. Describe how objects become charged, relate charge to the loss or gain of electrons and how charged objects behave in an electric field. How to use models to explain how electric circuits work. This is knowledge that students may have met before but will need to deepen their understanding Students should have knowledge of basic circuit symbols, electrical insulators and conductors, the elements required to make a bulb light. but only in relation to series circuits. They may also have encountered the terms voltage and current Key Skills that students should be able to demonstrate at the end of 'Topic' This is the skills  that students will meet for the first time in this topic How to set up a circuit based on a diagram. Take readings from ammeters and voltmeters and record them accurately. How to perform calculations on data. How to identify patterns in data and to draw an appropriate graph of the data. This is skills that students may have met before but will need to develop Students may have some experience of taking readings from other apparatus and recording them. They may have some experience of drawing a graph. Key vocabulary that students should know and understand Electrical conductor, electrical insulator, circuit, cell, charges, bulb, potential difference, voltmeter, components, Volts, current, Amperes, ammeter, resistance, Ohms, resistor, series, parallel, rating, electrons, negatively charged, positively charge. The Big Question What is electricity? Key questions that students should be able to answer at the end of the 'Topic' How can we build an electric circuit to make a bulb light up? Why does the size of the potential difference in a circuit matter? How can we change the resistance of a circuit? What is the relationship between current, voltage and resistance? Are there any advantages to connecting components in parallel compared to in series? How can current be controlled in a circuit? What are the causes, uses and dangers of static charge? What are the advantages and disadvantages of different models which explain how electric circuits work?