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- MAGNETISM AND ELECTRICITY
- Written tasks set in class
- COLEGIO SAN GREGORIO – 1er. AÑO Polimodal
- Textos expositivos, de divulgación científica, periodísticos, argumentativos. Características gramaticales y léxicas. Distribución de la información.
- LECTURA DE INVIERNO Se brindará un listado con obras pertenecientes a distintos géneros y con diferentes temáticas. Un libro a elección. LECTURA DE VERANO
USING ELECTRICITY-appreciate the need for a complete circuit when making use of electricity -appreciate that energy can be transferred by an electric current and that the current can be read by an ammeter -be able to explain how ammeters are used in circuits and what they measure -be aware of the dangers of electricity and state the hazards of poor insulation, overloading and damp conditions -know that an electric current is a flow of electric charge -understand that the readings on ammeters in simple and branching circuits conform to the idea that the behaviour of electricity in a circuit is analogous to the behaviour of, for example, currents of liquids in pipes -know that electric charge is measured in coulombs and that a flow rate of one coulomb per second is called one ampere -appreciate that electric charge produced by friction is the same charge which, moving around a circuit, produces an electric current ENERGY AND ELECTRICITY-be able to apply the idea of voltage numerically to circuits containing more than one component and apply correctly the term potential difference -know that a potential difference of one volt is equivalent to an energy difference of one joule per coulomb of charge -understand that the 'voltage' of an electrical supply is a measure of the energy it can transfer from an electrical supply elsewhere and that it can be measured with a voltmeter -be able to explain how voltmeters are used in circuits and what they measure -be able to use the relationship power = voltage x current -understand the meaning of the term electrical resistance and know that the resistance of a component (in ohms) = voltage across component / current through component -appreciate the experimental evidence leading to Ohm's Law -be able to work out the combined resistance of two resistors in series -be able to work out the combined resistance of two resistors in parallel -appreciate the factors affecting the resistance of a component: length of wire, temperature of wire and cross section of wire MAGNETISM AND ELECTRICITY-know that magnetic materials have the ability to attract some materials but to attract and repel each other -understand the meaning of the term magnetic field and know that the Earth is surrounded by one -know that forces can act on an electric current when in a magnetic field -understand that an electric current can be induced in a wire moving relative to a magnetic field -be able to apply this idea to understand the working of dynamos and alternators -know that the force on an electric current in a magnetic field is at right angles to the direction of the current and the field -be able to apply these ideas in understanding how an electric motor works -appreciate that an electric current itself has a magnetic field and that this can be applied to the design of electromagnets and relays COMMUNICATION-understand how, historically, the use of light greatly increased the speed of communication but that this required the use of a code -understand the difference between analogue signals and digital signals and recognise that the latter require an extension of the idea of a code for transmitting information -understand how the use of electrical signals has improved long-distance, high speed communication even further -understand the benefits of digital coding for transmitting information -be able to describe the operation of the microphone and earphone and relate their operation to basic physical principles -be able to compare the operation of the telephone system with radio communication, including the need for modulation of a carrier wave ELECTRONS-appreciate that the behaviour of the thermionic diode can be interpreted in terms of negatively-charged particles given off from a heated tungsten wire -recognise that the electron, as a basic component of the atom, could be the particle carrying an electric current in a thermionic diode and also the particle responsible for carrying charge round an electric circuit -appreciate that a flow of negatively charged particles (electrons) is the best solution in explaining the behaviour of a thermionic diode -understand how charges produced by friction can be understood in terms of an electron transfer -understand how the production of electrons from a heated wire has led to the cathode-ray oscilloscope and the possibility of television
ENERGY RESOURCES-understand the meaning of the term efficiency when it is applied to energy transfer processes -appreciate the necessity of finding an alternative to fossil fuels in the near future -understand how energy may be released from the nuclei of atoms by both nuclear fission and nuclear fusion -appreciate some of the problems involved in the use of nuclear fission as an energy resource -understand that there are alternative (renewable) energy resources, but understand that no single renewable energy source is likely to act as a total replacement for present energy resources -appreciate that greater efficiency in the use of energy can be as helpful as finding alternative sources ENERGY DISTRIBUTION-understand that energy can be transferred from fuels to electricity by dynamos -appreciate the problems involved in the electrical transmission of energy -understand the importance of transformers in the electrical transmission of energy -be able to describe the work of a transformer in terms of the currents induced by changing magnetic fields -be able to use the equation Vp / Vs = Np / Ns -appreciate the possible advantages of other methods of distributing energy, including the use of petrol for cars and the use of hydraulics ELECTRONICS-understand that electronics is an extension of the study of electricity -appreciate that knowledge of changes in resistance can be used to produce detectors which can respond to changes in the environment -appreciate how electronics can be used to solve simple problems in everyday life -appreciate that integrated circuits, called microprocessors, are the control units of many devices in everyday use -appreciate how AND, NOT and OR gates are used ASSESSMENT: Written tasks set in classOral lessons Participation in class Written testsHomework and oral presentationsLab reports Performance in the lab (individually and in team work) BIBLIOGRAPHYY10 booklet Physics Matters |
