Key terms & definitions

An automatic safety switch that opens the circuit when the current becomes too large and can be reset after the fault is corrected.

Officials responsible for conducting the royal inquiry in an allocated group of counties, known as a circuit.

A part of an electrical circuit, such as a cell, switch, lamp, resistor or motor.

A drawing that uses standard symbols and lines to show how electrical components are connected.

A representation of an electrical circuit using standard component symbols and lines for connecting wires.

A diagram using standard component symbols and connections to show how an electrical circuit is arranged.

A series of exercise stations completed in sequence, with the exercises and work:rest ratio chosen to target particular components of fitness.

Designing products to remain useful for longer and to support repair, reuse and recycling, reducing the need for new resources.

An economy that reduces waste by keeping products and materials in use through measures such as reuse, repair and recycling.

An approach that keeps products and materials in use through routes such as reuse and recycling rather than discarding them after one use.

A narrative structure in which a settled situation is disrupted and the problem is resolved, returning characters to a familiar situation.

An arrangement in which an ending returns to important features of the beginning, often revealing what has changed or failed to change.

The movement of blood around the body, driven by the heart.

The movement and availability of media products among audiences, such as newspaper copies being sold or digital material being shared.

A large-scale pattern of circulating air, involving rising, sinking and horizontal movement.

The organ system in which the heart pumps blood through blood vessels to transport substances around the body.

The transport system consisting of the heart, blood and blood vessels.

Walking around a sacred person, object or place as an act of reverence.

Removal of the foreskin of the penis; a practice followed by Muslim families for boys, with differences in its timing and celebration.

A circular movement in which the end of a limb traces a circle and the limb sweeps out a cone shape, combining flexion, extension, abduction and adduction.

The distance once around the boundary of a circle.

To travel all the way around the world.

A voyage all the way around the world.

Evidence from surrounding circumstances rather than direct observation of the alleged crime.

Rome’s large venue for public games, especially horse-racing.

Rome’s largest chariot-racing venue, situated in the valley between the Palatine and Aventine hills.

Severe scarring of the liver that usually cannot be reversed.

Severe scarring of the liver that can prevent it from working properly.

An enclosed storage chamber used to collect and hold water.

A tank or reservoir used to hold water.