Key terms & definitions

A pattern of light at particular wavelengths produced by a substance; each metal ion produces a characteristic emission spectrum.

A plausible pathway describing how greenhouse gas emissions could develop in the future; it is an assumption used in projections, not a guaranteed outcome.

A system that limits total emissions from covered activities and allows participants to buy and sell emissions allowances.

To give out energy as radiation.

Radiation given out by a body, transferring energy away from it.

A name meaning ‘God is with us’, used in Matthew’s account to express Jesus’ identity and significance.

A simplified representation of a face used to communicate emotion.

A feeling, such as love, fear or anger, that can influence a person’s thoughts and actions.

A feeling state, such as fear, happiness or sadness.

A person's wellbeing in relation to their feelings, their view of themselves and their ability to cope with everyday pressures.

The effort involved in meeting other people's emotional needs and maintaining relationships.

A map showing people's feelings about particular locations using symbols, colours or annotations explained by a key.

A person's need for love, closeness, trust and emotional security.

Language chosen to encourage a particular emotional response, such as sympathy, anger or hope.

Language chosen to arouse feelings such as pity, fear, admiration or outrage.

Understanding and imaginatively sharing another person’s feelings or experiences.

The ability to understand or share another person’s feelings, including those of an enemy.

Trying to understand another person’s feelings and situation.

The ability to understand and share another being’s feelings.

A group of territories or peoples controlled by one ruling power.

A group of territories and peoples ruled or controlled by another country.

Empirical data consists of values obtained from observations or measurements rather than from a theoretical model.

Evidence obtained through observation or experiment.

A chemical formula showing the simplest whole-number ratio of the different atoms or ions in a compound.

A formula showing the simplest whole-number ratio of the elements in a compound.

The sum of the relative atomic masses represented by one empirical formula unit.

A probability found from the results of an experiment or observed data.

The approximate rule that, in a Normal distribution, 68% of values lie within one standard deviation of the mean and 95% lie within two; values more than three standard deviations away are very unusual.

An approach to knowledge based on observation and evidence. Lanyon examines substances and bodily symptoms, but struggles to accept what he witnesses.

An approach to knowledge that emphasises observation and experience as evidence.