Energy in the home
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Explain temperature and movement of heat in terms of energy
Describe transfer of heat energy by conduction, convection and radiation.
Explain thermal conductors and insulators
List and explain ways houses lose heat energy
List and explain various methods of home insulation
Calculate the payback period of an insulation
Explain with use of a Sankey diagram and calculate the efficiency of an appliance
Cost of electricity
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Explain how electricity can be generated and describe ways to increase and change the direction of the induced current.
Describe how fossil fuel power stations work
Describe a number of renewable energy sources and explain how electricity is generated
Compare the positives and negatives of renewable and fossil fuel energy generation
Define power and calculate electrical power
Explain the national grid and its reactions to demand
Explain why transformers are needed
Calculate the energy used by an appliance in kilowatt hours
Calculate the cost of running an appliance
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Waves
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Describe a wave using wavelength, amplitude, frequency and speed.
Compare transverse and longitudinal waves.
Calculate the speed of a wave from the distance it travels in a certain time. Calculate distance from echoes.
Use the wave equation to calculate frequency, wavelength or wave speed.
Complete ray diagrams for reflection.
Complete ray diagrams for refraction and explain why it occurs.
Describe and recognise total internal reflection and describe practical uses.
Describe the differences between digital and analogue signals.
List the sections of the electromagnetic spectrum and describe their uses and dangers.
Discuss the dangers associated with mobile phones.
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Space
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Order universe, galaxy, star, planet, solar system in terms of size.
Describe the main features of the solar system.
Explain day, night, seasons, months, eclipses.
Describe the effect gravity has on objects such as comets and explain why they have tails
Describe two different satellite orbits, how they stay in the right place and explain the uses for each.
Explain how new planets are found.
Describe the relationships between orbital period, radius of orbit, temperature.
Describe the forces acting on stable stars.
Calculate the lifetime of a star from its mass.
Explain how we know what a star is made of.
Describe the life cycle of both low and high mass stars.
Describe how light from distant stars tells us about their speed.
Define red shift and explain how it gives us evidence for the big bang
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