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Browse key terms and definitions across all GCSE subjects. Search by keyword or filter by subject and exam board.
23,110 key terms
Linear motion
Movement along a straight line.
Linear movement
Movement along a straight line.
Linear narrative
A narrative that presents events in chronological order.
Linear narrative
A narrative that presents its main events in chronological order.
Linear perspective
A depth cue in which parallel lines appear to converge as they extend into the distance.
Linear relationship
A relationship represented by a straight line on a graph; equal changes in one variable produce equal changes in the other.
Linear relationship
A relationship represented by a straight line on a graph. A directly proportional relationship has a straight line passing through the origin.
Linear relationship
A relationship represented by a straight-line pattern on a scatter diagram.
Linear scale factor
The multiplier that changes every length in one similar figure into the corresponding length in another.
Linear scale factor
The multiplier that changes each corresponding length of one shape or solid into that of a similar shape or solid.
Linear search
An algorithm that checks items one at a time, in sequence, until the target is found or the end of the list is reached. It works on sorted or unsorted data.
Linear sequence
A sequence whose nth term can be written in the form , where and are constants.
Linear tactics
The use of organised infantry formations, especially lines for musket fire, columns for movement and squares for defence against cavalry.
Linear television
Television shown according to a broadcaster’s schedule, rather than selected by the viewer for playback whenever they choose.
Line bending
Heating a narrow line across a thermoplastic sheet, bending it along that line and allowing it to cool in position.
Line chart
A graph in which plotted points are joined in order to show how a variable changes along a continuous scale, such as time or distance.
Line emission spectrum
A chart showing the wavelengths of light emitted by a substance as separate lines or peaks.
Line graph
A graph with numerical axes that uses connected points to show changes, commonly over time.
Line graph
A graph with plotted points joined by lines, showing how one variable changes as another progresses continuously.
Line graph
A graph that joins successive plotted values to show how a quantity changes across an ordered variable, such as time.
Line graph
A graph with points joined in order to show how a measurement changes across a continuous scale, such as time.
Line of action
An imaginary straight line extending in the direction in which a force acts.
Line of action
The straight line along which a force acts.
Line of argument
The connected reasoning through which an essay develops and supports its central interpretation.
Line of argument
The connected reasoning that develops and supports a writer’s position throughout a text.
Line of battle
A naval formation in which warships sail one behind another, allowing them to fire their side-mounted guns towards the enemy while maintaining an ordered formation.
Line of best fit
An estimated line through the centre of a scatter-graph pattern, with points and their distances roughly balanced on either side.
Line of best fit
A line or smooth curve drawn to represent the overall pattern of plotted data, rather than joining every point.
Line of best fit
A line or curve drawn to represent the overall trend of plotted data.
Line of best fit
A line or curve that represents the overall pattern of plotted data rather than joining each point in turn.
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