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Physics Unit 1 P1 P2 P3 GRADE CHECKERS P1 Revision - Energy for the home Go to http://www.bbc.co.uk/schools/gcsebitesize/science/ocr_gateway/home_energy/ This is the link for the P1 unit on OCR Gateway Science. Write detailed WWW and EBI for each revision activity that you carry out. Topic WWW EBI Heating houses Keeping homes warm An introduction to waves A spectrum of waves Light and lasers Cooking and communication using waves Data transmission Wireless signals Stable Earth P1 Grade Checker- higher tier Revising module P1 To help you start your revision, the specification for module P1 has been summarised in the checklist below. Work your way along each row and make sure that you are happy with all the statements for your target grade. To aim for a grade D-C To aim for a grade B-A* □ Recognise and understand the □ Describe temperature as a measure of consequences of the direction of energy hotness on an arbitrary scale. flow between bodies of different □ Understand that temperature is temperatures. dependant on kinetic energy. □ Understand that temperatures can be □ Explain that the hottest parts of a P represented by a range of colours in a thermogram are white/yellow/red, and 1 thermogram. the coldest parts are black/dark/purple. a □ Understand the concepts of specific □ Describe heat as a measurement of heat capacity and specific latent heat. energy on an absolute scale. □ Use the specific heat capacity equation. □ Use specific heat capacity and specific □ Use the specific latent heat equation. latent heat equations, including a change □ Describe how there is no temperature of subject. change when materials are boiling, □ Explain why temperature does not melting, or freezing. change during a change of state. □ Explain how energy is transferred. □ Describe how energy is transferred by □ Explain how losses by energy transfer conduction, convection and radiation. can be reduced by domestic energy □ Explain energy loss in a cavity wall and P saving measures. what measures can be taken to minimise 1 □ Explain that energy is lost from houses it. b to the atmosphere. □ Explain conduction, convection and □ Understand that energy is conserved of radiation in terms of home and appliance proteins. design, and energy saving strategies. □ Describe the main features of a traverse □ Use the wave equation, including a wave. change of subject and use of standard □ Determine the wavelength of frequency form. of a wave from a diagram and use this in □ Describe a diffraction pattern for waves, the wave equation. including the significance of the size of □ Use ray diagrams to describe reflection opening/barrier and wavelength. at multiple plane boundaries. □ Describe and explain the limiting effects P □ Understand that reflection occurs due to of diffraction on telescopes and optical 1 change in wave speed. microscopes. c □ Describe diffraction of waves at an opening. □ Identify and order the seven types of electromagnetic wave in the spectrum. □ Relate the size of a communications receiver to the wavelength of the type of signal received. P1 Grade Checker- higher tier To aim for a grade D-C Describe Morse code as a use of light for communication. □ Recognise that Morse code is a type of digital signal. □ Describe what happens to light at a boundary, below, at, and above the critical angle. □ Understand how light and infrared radiation travel along an optical fibre by Total Internal Reflection. □ Understand that a laser produces a narrow beam of light of a single colour. □ P 1 d □ □ □ P 1 e Describe properties of infrared radiation. Describe properties of microwaves. Understand and describe the use of microwaves to transmit information over large distances. □ Describe why mobile phones and masts may or may not be dangerous. □ Describe how potential dangers may be increased by frequent use. □ Explain how publishing studies into mobile phone radiation results to be checked. □ P 1 f □ □ P 1 g □ □ □ P 1 h □ □ □ □ Describe how infrared can carry information to control devices. Recall that the properties of digital signals contributed to the switch to digital TV and radio broadcast. □ Describe the transmission of light in optical fibres. Recall refraction and reflection of radiation used for communication, and how this can be an advantage of a disadvantage for signal reception. Describe common uses of wireless technology. Understand interference between radio stations with similar frequencies. □ Describe advantages and disadvantages of DAB broadcasts. Understand that shock waves from earthquakes can travel inside the earth. Recall the two types of seismic wave. Explain how cancer risk is reduced by darker skin. Calculate how long a person can spend in the sun without burning. Describe how the dangers of exposure to ultraviolet radiation have been publicised. To aim for a grade B-A* Explain the advantages and disadvantages of different communication systems. □ Describe why morse code is a digital signal. □ Describe applications of Total Internal Reflection in fibre optics. □ Explain why lasers produce an intense, coherent beam of light. □ Explain how a laser beam is used in a CD player. □ □ Explain how microwaves and infrared transfer energy to materials. □ Describe how energy associated with microwaves and infrared depends on their frequency. □ Relate the energy of microwaves and infrared to their potential dangers. □ Explain how microwave signal loss happens. □ Describe how signal loss problems are reduced. □ Understand that individuals and society must balance the risks and benefits of mobile phone use. □ Explain how signal from an infrared remote control uses digital signals. □ Describe the advantages of digital signals. □ Describe the advantages of optical fibres. □ Explain the dependencies involved in long distance communication. □ Recall the refraction and reflection in the atmosphere is similar to Total Internal Reflection of light. □ Explain how refraction and diffraction of radiation affects communications. □ Explain the advantages of digital radio in terms of interference. □ Describe h ow seismic waves can provide evidence for the structure of the Earth. □ Describe how the ozone layer protects the Earth from ultraviolet radiation. □ Describe the effects of environmental pollution by CFCs. □ Describe how discovery of the ozone hole has changed behaviour. □ Describe how ozone reduction measurements were verified. P2 Revision - Energy resources Go to http://www.bbc.co.uk/schools/gcsebitesize/science/ocr_gateway/home_energy/ This is the link for the P2 unit on OCR Gateway Science. Write detailed WWW and EBI for each revision activity that you carry out. Topic WWW EBI Collecting energy from the Sun Generating electricity Global warming Fuels for power Nuclear radiations Exploring our solar system Threats to Earth The Big Bang P2 Grade Checker- higher tier Revising module P2 To help you start your revision, the specification for module P2 has been summarised in the checklist below. Work your way along each row and make sure that you are happy with all the statements for your target grade. To aim for a grade D-C To aim for a grade B-A* □ Describe advantages and □ Describe how light produces electricity disadvantages of photocells. in a photocell. □ Describe advantages and □ Describe the factors determining the P disadvantages of wind turbines. current and power produced in a 2 photocell. a □ Explain why passive solar heating works. □ Recall that an efficient solar collector must track the sun across the sky. □ Describe and recognise ways to □ Use the energy efficiency calculation increase the dynamo effect. to calculate useful energy output, total □ Describe and interpret AC using energy input, or wasted energy. P generators work. 2 □ Describe how simple AC generators b work. □ Describe how electricity is generated at a conventional power station. □ Describe how certain □ Explain the green house effect. electromagnetic wavelengths are absorbed by gases in the □ Explain how scientists can agree about atmosphere. the greenhouse effect, but disagree □ Recall and identify natural and about whether human activity is man-made sources of greenhouse affecting global warming. gases. P □ Explain the impact of human activity 2 and natural phenomena on weather c patterns. □ Describe scientific evidence for and against the idea of man made global warming. □ Distinguish between opinion and evidence based statements about global warming. □ Use the power equation to calculate □ Use and manipulate the power the power of an appliance, including equation. conversion of units of power. □ Use the kilowatt hour as a measure of □ State that the unit of electrical energy supplied. energy supplied is the kilowatt hour. □ Describe the advantages and P □ Calculate the number of kilowatt disadvantages of using off peak 2 hours given power and time used. electricity in the home. d □ Use the energy supply equation to □ Explain how an increasing voltage calculate energy supplied. reduces current, decreasing energy □ Calculate the cost of energy lost from cables as heat. supplied. P2 Grade Checker- higher tier To aim for a grade D-C To aim for a grade B-A* □ P 2 e Describe examples of beneficial uses of radiation. □ Understand that radioactive materials give out radiation overtime. □ Describe the relative penetrating power of alpha, beta and gamma radiation. □ Understand that nuclear radiation can form negative ions when atoms gain electrons. □ Recall that plutonium is a nuclear waste product and can be used to make nuclear bombs. □ Describe methods of disposing of radioactive waste. □ P 2 f Recall the relative nature and size of the features of the Universe. □ Describe a light year. □ Describe the difficulties of manned space travel between planets. □ Recall that unmanned spacecraft can withstand conditions lethal to humans. □ Compare how information from space is returned to Earth from different distances. □ P 2 g P 2 h □ Explain how ionisation can damage the DNA in human cells. □ Describe the advantages and disadvantages of nuclear power. □ Explain the problems of dealing with radioactive waste. □ Recall that circular motion requires a centripetal force. □ Understand that gravitation attraction provides the centripetal force for orbital motion. □ Explain why a light year is a useful unit for measuring large distances. □ Explain the advantages and disadvantages of using unmanned spacecraft. Describe evidence for the Earth-Moon system as the result of a collision between two planets. □ Describe the origin and orbit of asteroid collisions. □ Describe the origin and orbit of comets. □ Describe how the speed of a comet changes as it approaches a star. □ Describe how observations of NEOs are used to explain their trajectories. □ Explain why it is difficult to observe NEO’s. □ □ □ Recall the movement of galaxies away from Earth. □ Recall that microwave radiation is received from all parts of the Universe. □ Describe the end of the life cycle of a small star. □ Describe the end of the life cycle of a large star. □ Describe the evidence or observations behind Copernicus and Galileo’s new models of the Universe. □ Explain how technological advances contributed to the new models. Discuss evidence for the Earth-Moon systems as the result of a collision between two planets. □ Explain the location of the asteroid belt. □ Explain why the speed of a comet changes as it approaches a star. □ Suggest and discuss possible actions to reduce the threat of NEOs Explain how the Big Bang theory accounts for red shift, and greater red shift in more distant galaxies. □ Explain how the Big Bang theory accounts for the age and starting point of the Universe. □ Describe the life history of a star. □ Explain the properties of a black hole. □ Explain why Copernicus and Galileo’s new models were considered controversial. Revision P3 - Forces for transport http://www.bbc.co.uk/schools/gcsebitesize/science/add_ocr_gateway/forces/ Read through the revision notes and carry out the test in on each section. Then write a WWW and EBI for the revision you have carried out. Topic WWW ● ● ● ● Speed Revise Speed ● ● Changing speed Revise Changing speed Activity on Changing speed Test yourself on Changing speed ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● Test yourself on Speed Forces and motion Revise Forces and motion Test yourself on Forces and motion Work and power Revise Work and power Test yourself on Work and power Energy on the move Revise Energy on the move Test yourself on Energy on the move Crumple zones Revise Crumple zones Activity on Crumple zones EBI ● Test yourself on Crumple zones ● ● Falling safely Revise Falling safely ● ● ● ● ● ● ● Test yourself on Falling safely The energy of games and theme rides Revise The energy of games and theme rides Activity on The energy of games and theme rides Test yourself on The energy of games and theme rides Test (H)