Task: Explain what is meant by 'efficient', calculate the amount of energy produced per second and name three forms of 'waste energy' of steam engines. Assessment focus: energy transformations.
Students are given a key list of words associated with earthquakes. Student use these and their own knowledge to write a paragraph explaining five key points about earthquakes.
Task: Students draw a picture of a burning candle to show changes that occur. Assessment focus: representing the way particles behave when material undergoes temporary and permanent changes.
Students are given two equations describing the burning of petrol. Students identify each as either complete or incomplete combustion and then describe two disadvantages of incomplete combustion.