Key terms & definitions

The forced movement of people away from their homes, for example because flooding makes an area unsafe.

A reaction in which a more reactive metal replaces a less reactive metal in a compound.

The straight-line change in position in a stated direction. It is a vector quantity and can be found from the signed area under a velocity–time graph.

The distance and direction of a point from its undisturbed position.

The change in position, including direction. On a velocity–time graph it is represented by signed area: area above the time axis is positive and area below it is negative.

Being forced to leave the place where one lives.

Being forced to leave one's home, for example because fighting makes it unsafe to remain.

The loss of information from a limited-capacity memory store when new information pushes it out.

Finding an object's volume from the volume of liquid it pushes aside when fully submerged.

A reaction in which a more reactive element replaces a less reactive element in one of its compounds.

A reaction in which a more reactive element replaces a less reactive element in a compound.

The surroundings and events that provide sensory information to a performer, such as a moving ball and the positions of other players.

A representation that shows every atom in a molecule and every bond between the atoms.

A representation showing every atom and every covalent bond in a molecule.

Behaviour intended to demonstrate qualities associated with being masculine, such as toughness, sometimes through aggression to impress others.

The money available to a person or household after paying taxes.

Money available to a household after paying taxes, which can be spent or saved.

Income remaining after income tax and other compulsory deductions, available to spend or save.

Money available to spend after tax and essential living costs have been paid.

The final handling of unwanted waste that is not recovered for further use, for example by sending it to landfill.

An individual characteristic, such as personality or morality, that influences behaviour.

The loss of land or possessions, especially when people are forced from land by others.

The loss of land, property or control over a place to another person or group.

A legal restriction that prevents someone from standing for, or holding, an elected office.

Ignored, rejected or treated as less valuable by other people.

A person treated as unimportant, ignored or excluded by other people in society.

An event or problem that disturbs the existing situation and usually triggers narrative action.

An event or threat that disturbs an established situation and creates the central narrative problem.

Cutting open a dead body to examine its internal structures.

Opposition to the policies or authority of a government.