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Sc4 |
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circuits |
a |
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how to design and construct series and parallel circuits, and how to measure current and voltage; |
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b |
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that the current in a series circuit depends on the number of cells and the nature of other components and that current is not 'used up' by components; |
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c |
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that energy is transferred from batteries and other sources to other components in electrical circuits; |
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magnetic fields |
d |
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about magnetic fields as regions of space where magnetic materials experience forces, and that like magnetic poles repel and unlike poles attract; |
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electromagnets |
e |
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that a current in a coil produces a magnetic field pattern similar to that of a bar magnet; |
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f |
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how electromagnets are constructed and used in devices (eg relays, lifting magnets). |
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force and linear motion |
a |
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how to determine the speed of a moving object and to use the quantitative relationship between speed, distance and time; |
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b |
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that the weight of an object on Earth is the result of the gravitational attraction between its mass and that of the Earth; |
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c |
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that unbalanced forces change the speed or direction of movement of objects and that balanced forces produce no change in the movement of an object; |
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d |
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ways in which frictional forces, including air resistance, affect motion (eg streamlining cars, friction between tyre and road; |
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force and rotation |
e |
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that forces can cause objects to turn about a pivot; |
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f |
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the principle of moments and its application to situations involving one pivot; |
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force and pressure |
g |
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the quantitative relationship between force, area and pressure and its application (eg the use of skis and snowboards, the effect of sharp blades, hydraulic brakes). |
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the behaviour of light |
a |
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that light travels in a straight line at a finite speed in a uniform medium; |
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b |
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that non-luminous objects are seen because light scattered from them enters the eye; |
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c |
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how light is reflected at plane surfaces; |
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d |
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how light is refracted at the boundary between two different materials; |
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e |
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f |
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the effect of colour filters on white light and how coloured objects appear in white light and in other colours of light; |
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hearing |
g |
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that sound causes the eardrum to vibrate and that different people have different audible ranges; |
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h |
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some effects of loud sounds on the ear (eg temporary deafness); |
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i |
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that light can travel through a vacuum but sound cannot, and that light travels much faster than sound; |
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j |
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the relationship between the loudness of a sound and the amplitude of the vibration causing it; |
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k |
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the relationship between the pitch of a sound and the frequency of the vibration causing it. |
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the Solar system |
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how the movement of the Earth causes the apparent daily and annual movement of the Sun and other stars; |
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b |
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the relative positions of the Earth, Sun and planets in the solar system; |
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c |
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about the movements of planets around the Sun and to relate these to gravitational forces; |
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d |
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that the Sun and other stars are light sources and that the planets and other bodies are seen by reflected light; |
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e |
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energy resources |
a |
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about the variety of energy resources, including oil, gas, coal, biomass, food, wind, waves and batteries, and the distinction between renewable and non-renewable resources; |
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b |
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about the Sun as the ultimate source of most of the Earth's energy resources and to relate this to how coal, oil and gas are formed; |
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c |
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that electricity is generated by means of a variety of energy resources; |
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conservation of energy |
d |
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the distinction between temperature and heat, and that differences in temperature can lead to transfer of energy; |
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e |
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f |
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how energy is transferred by the movement of particles in conduction, convection and evaporation, and that energy is transferred directly by radiation; |
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g |
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that although energy is always conserved, it may be dissipated, reducing its availability as a resource. |
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