Energy in the National Curriculum, 2007

KS3 Energy, electricity and forces

a energy can be transferred usefully, stored, or dissipated, but cannot be created or destroyed

KS4 Energy, electricity and radiations

In their study of science, the following should be covered:

a energy transfers can be measured and their efficiency calculated, which is important in considering the economic costs and environmental effects of energy use

b electrical power is readily transferred and controlled, and can be used in a range of different situations

c radiations, including ionising radiations, can transfer energy

Further details can be found in the STEM Learning eLibrary:
Science in the National Curriculum 2007