Key terms & definitions

A non-profit voluntary organisation that operates independently of government to pursue particular aims. It may work locally, nationally or internationally.

Iron found in foods such as pulses, green vegetables and fortified cereals. Its absorption is helped by vitamin C and reduced by substances such as tannins and phytates.

Contraception that works without using hormones, for example by forming a barrier or using surgery.

The refusal to import goods from another country; colonists used non-importation of British goods to challenge British policies.

A less serious criminal offence heard in a magistrates’ court rather than the Crown Court.

A species introduced to an area where it does not naturally occur.

A species that does not occur naturally in a particular area and has been introduced there.

An electrode whose material takes part in the reaction; a copper anode dissolves during electrolysis of copper sulfate solution.

An electrode whose material takes part in an electrolysis reaction; also called an active electrode.

A circuit element whose current–potential difference graph is curved, showing that its resistance changes between operating points.

A circuit component whose current–potential difference graph is not a straight line over the range being considered.

A component whose current–potential difference graph is not a single straight line, so current and potential difference are not directly proportional.

A relationship in which force is not proportional to extension, producing a curved force–extension graph.

A narrative whose telling does not follow the chronological order of all its events.

A narrative that presents some events out of chronological order, for example through flashbacks.

A narrative that presents events in an order other than their chronological sequence.

A relationship represented by a curve rather than a straight line; the rate at which one variable changes relative to the other is not constant.

A relationship represented by a curved rather than a straight line on a graph.

An arrangement of events that does not follow the order in which they happened.

Reading a text as communicating meaning through symbolism or metaphor, rather than treating every detail as a factual description of events.

A person who understands a scriptural creation account as conveying religious truths without necessarily describing events or timescales literally.

Christian worship that does not depend on a fixed liturgy, allowing flexibility in the order of the service and the words used.

Additional information supplied by a food business that is not legally required in that situation, such as a serving suggestion.

An element that does not react to form positive ions.

An element that does not form positive ions in its characteristic chemical reactions.

An element that typically conducts heat and electricity poorly and is brittle when solid.

A quadratic expression whose coefficient of $x^2$ is not $1$.

Numerical information produced by organisations outside government, such as charities, banks and market research organisations.

Observation in which the researcher watches without joining the group's activities.

An observation in which the researcher watches people without taking part in their activities.