Sc4

 

Physical processes

 




Electricity and magnetism

Unit 7J Forces and their effects
Unit 8J Magnets and electromagnets
Unit 9I Energy and electricity

 


Forces and motion

Unit 7K Forces and their effects
Unit 9K Speeding up
Unit 9L Pressure and moments

 


Light and sound

Unit 8K Light
Unit 8L Sound and hearing

 


The Earth and beyond

Unit 7L The solar system and beyond
Unit 9J Gravity and space

 


Energy resources and energy transfer

Unit 7I Energy resources
Unit 8I Heating and cooling









 


Pupils should be taught:

circuits

a

 

how to design and construct series and parallel circuits, and how to measure current and voltage;


 

b

 

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;

c

 

that energy is transferred from batteries and other sources to other components in electrical circuits;

magnetic fields

d

 

about magnetic fields as regions of space where magnetic materials experience forces, and that like magnetic poles repel and unlike poles attract;

electromagnets
 

e

 

that a current in a coil produces a magnetic field pattern similar to that of a bar magnet;


f

 

how electromagnets are constructed and used in devices (eg relays, lifting magnets).




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Forces and motion

 


Pupils should be taught:

force and linear motion

a

 

how to determine the speed of a moving object and to use the quantitative relationship between speed, distance and time;


 

b

 

that the weight of an object on Earth is the result of the gravitational attraction between its mass and that of the Earth;


 

c

 

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;


 

d

 

ways in which frictional forces, including air resistance, affect motion (eg streamlining cars, friction between tyre and road;

force and rotation

e

 

that forces can cause objects to turn about a pivot;

 

f

 

the principle of moments and its application to situations involving one pivot;

force and pressure

g

 

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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Light and sound

 


Pupils should be taught:

the behaviour of light

a

 

that light travels in a straight line at a finite speed in a uniform medium;


 

b

 

that non-luminous objects are seen because light scattered from them enters the eye;


 

c

 

how light is reflected at plane surfaces;

d

 

how light is refracted at the boundary between two different materials;


 

e

 


that white light can be dispersed to give a range of colours;


 

f

 

the effect of colour filters on white light and how coloured objects appear in white light and in other colours of light;

hearing

g

 

that sound causes the eardrum to vibrate and that different people have different audible ranges;


 

h

 

some effects of loud sounds on the ear (eg temporary deafness);


vibration and sound

i

 

that light can travel through a vacuum but sound cannot, and that light travels much faster than sound;


 

j

 

the relationship between the loudness of a sound and the amplitude of the vibration causing it;


 

k

 

the relationship between the pitch of a sound and the frequency of the vibration causing it.




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The Earth and beyond

 


Pupils should be taught:

the Solar system

a

 

how the movement of the Earth causes the apparent daily and annual movement of the Sun and other stars;


 

b

 

the relative positions of the Earth, Sun and planets in the solar system;


 

c

 

about the movements of planets around the Sun and to relate these to gravitational forces;

d

 

that the Sun and other stars are light sources and that the planets and other bodies are seen by reflected light;


 

e

 


about the use of artificial satellites and probes to observe the Earth and to explore the solar system.




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Energy resources and energy transfer

 


Pupils should be taught:

energy resources

a

 

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;


 

b

 

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;


 

c

 

that electricity is generated by means of a variety of energy resources;

conservation of energy

d

 

the distinction between temperature and heat, and that differences in temperature can lead to transfer of energy;


 

e

 


ways in which energy can be usefully transferred and stored;


 

f

 

how energy is transferred by the movement of particles in conduction, convection and evaporation, and that energy is transferred directly by radiation;

g

 

that although energy is always conserved, it may be dissipated, reducing its availability as a resource.




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