# Physics

## Year 11 Physics

Physics gives us a deeper understanding of the world around us and allows us to making informed decisions about many complex issues that affect us all every day from global warming to which fuel to choose for the future.  Although it is taught with a practical bias we do cover a huge range of subject matter over the three-year course. Mathematical understanding and the ability to manipulate equations is essential for this subject.

## Facilities

Physics is taught in a new bespoke physics laboratory and is of course taught by subject specialists who have enthusiasm for the subject matter.

## Autumn Term

Electromagnetic induction
Explain how to produce an electric current by the relative movement of a magnet and a conductor
Explain how electromagnetic induction is used in alternators to generate current which alternates in direction (a.c.) and to generate direct current (d.c.)
Use the turns ratio equation for transformers to calculate either the missing voltage or the missing number of turns: number of turns in secondary coil number of turns in primary coil potential difference across secondary coil
Explain where and why step-up and step-down transformers are used in the transmission of electricity in the national grid
Explain the advantages of power transmission in high voltage cables
Particle theory
Use a simple kinetic theory model to explain the different states of matter (solids, liquids and gases) in terms of the movement and arrangement of particles
Calculate density
Describe that when substances melt, freeze, evaporate, boil, condense or sublimate mass is conserved and that these physical changes differ from some chemical changes because the material recovers its original properties if the change is reversed
Define the terms specific heat capacity and specific latent heat and explain the differences between them
Use the equation: thermal energy for a change of state (joule , J) = mass (kilogram, kg) × specific latent heat (joule per kilogram, J/kg)
Explain the effect of changing the temperature of a gas on the velocity of its particles and hence on the pressure produced by a fixed mass of gas at constant volume
Explain that gases can be compressed or expanded by pressure changes
Calculate pressure or volume for gases of fixed mass at constant temperature

## Spring Term

Forces and matter
Describe the difference between elastic and inelastic distortion
Recall and use the equation for linear elastic distortion
Explain why atmospheric pressure varies with height above the Earth’s surface with reference to a simple model of the Earth’s atmosphere
Explain how pressure is related to force and area
Explain why the pressure in liquids varies with density and depth
Use the equation to calculate the magnitude of the pressure in liquids and calculate the differences in pressure at different depths in a liquid
Recall that the upthrust is equal to the weight of fluid displaced
Revision of all topics