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CCEA Prescribed Practicals
Unit 3, Booklet A is a practical skills assessment. It assesses students’ ability to carry out two practical tasks based on but not identical to the nine prescribed practicals listed in this specification.
Booklet B is a written, externally assessed examination taken during the final year of study. It assesses students’ knowledge and understanding of practical science. It consists of questions about planning and carrying out any of the prescribed practical tasks, together with more general questions about any practical situation that arises in Units 1 and 2 in this specification.
Choose your experiment:

Springs  Investigate experimentally the extension of a spring and how it is related to the applied force, and recall that the extension of a spring is directly proportional to the force applied, provided that the limit of proportionality is not exceeded

Density [FREE]  Investigate experimentally the relationship between the mass and volume of liquids and regular solids, and analyse and interpret the data gathered

Refraction  Use ray tracing to measure the angles of incidence and refraction when light is refracted by a glass block and to use the measurements taken to plot a graph of angle of incidence against angle of refraction to show that they are related but not proportional

Resistance of a Length of Wire [FREE]  Investigate experimentally how the resistance of a metallic conductor at constant temperature depends on length and obtain sufficient values to plot a graph of resistance (yaxis) and length (xaxis)