Acid Rain – Rainfall of an acidic level which is caused by atmospheric pollution.
Ageing Population – A population where the average age increases over time. It’s average is age is proportionally high.
Annual Population Change – The cumulative change in the size of a population over one year after natural change and migration have been accounted for.
Anti-Natalist Population Policy - A type of population policy that discourages births and aims to lower the population.
Appropriate Technology – The technology used by a group or country that is fitting to their needs, expertise, wealth and resources.
Bio-Energy – Renewable energy produced from decomposing biomass.
Birth Rate – The live number of births per 1000 in a population per year.
Carrying Capacity – The largest population of people a particular area can support at a given level of technological development.
Climate Change – The way global patterns of the climate differ over time.
Census - A questionnaire given to each member of the population that asks questions about standards of living, ethnicity and personal information.
Death Rate – Number of deaths per 1000 of a population per year.
Demographic Transition Model - A graph showing how levels of a population change when birth and death rates vary over time as a country moves through the stages of development.
Dependency Ratio – The proportion of non-economically active members of a population are supported by those who should be working.
Emigrant – Someone migrating out of a country.
Energy Conservation – The methods used to reduce the total amount of energy used.
Fertility Rate – Average amount of children a woman of a population has when in child bearing age.
Forced Migration – The migrant is made to migrate due to certain circumstances.
Geothermal Energy – Renewable energy obtained from the heating of water using the Earth’s natural heat.
Hydroelectricity – The electricity generated from the flow of water passing through a dam.
Host Country – The country where migrants immigrate to.
Immigrant – Someone migrating into a country.
Infant Mortality Rate – Number of deaths of infants (aged 1 year and below) per 1000 of a population per year.
Life Expectancy – Average number of years one is predicted to live.
Migration – A permanent or semi-permanent change of residence of an individual or group of people.
Migration Rate – Difference of the number of people entering and leaving a country per year per 1000.
Natural Change – The change in population size due to the interrelationship in birth and death rates.
Net Migration – The difference between immigrants and emigrants in an area.
Non–Renewable Resources – Finite resources which have been built up over time and can’t be used without depleting stock levels.
Nuclear Energy – Energy produced from nuclear fission. It is achieved from a reaction in the nucleus in the atom.
Old-Age Index – The proportion of retired members in a population that are supported economically by those who should be working.
Optimum Population – The population at which quality of life is at its highest at a given level of technological development.
Overpopulation – When an increase in population decreases quality of life.
Population Density – The degree to which people are spread out in an area.
Population Structure – The proportion of males and females of different age groups in a single population.
Primary Energy – Energy sources in their raw form when extracted.
Pro-Natalist Population Policy – A type of population policy that encourages births and aims to raise the population level.
Pull Factors – Reasons to immigrate into a country.
Push Factors – Reasons to emigrate away from a country.
Rate of Natural Change – Number of people per year by which the population increases or decreases.
Renewable Resources – Resources that have a natural rate of availability. They yield a sustainable continuous flow.
Replacement Level – Number of children needed to be born to maintain the population size.
Resource – Any part of the environment that can be used to meet human needs.
Secondary Energy – Manufactured sources of energy used to provide power. They are produced from primary energy.
Settlement - A distinct area of a city that has its own characteristics.
Solar Energy – Renewable energy obtained directly from solar output.
Source Country – The country from where the migrants emigrate from.
Sustainable Development – Development that meets the needs of the current generation without compromising the needs of future generations.
Tidal Energy – Renewable energy obtained from the rise and fall of the ocean’s tide.
TNC – (Trans National Corporation) A multinational company that has its headquarters in a developed country but factories in developing countries.
Underpopulation – When an increase in population increases quality of life.
Voluntary Migration – The migrant makes the choice to migrate.
Wave Energy – Renewable energy produced from the force of the waves pushing air into a turbine.
Wind Energy – Renewable energy obtained by the moving force of the wind.
Young-Age Index - The proportion of members of the population who still haven’t started to work that are supported by those who do.
Youthful Population – A population where average age decreases over time and is proportionally very low.