Population Change Flashcards
Birth rate
The number of live births per 1000 people per year - e.g. 17/1000
Brownfield sites
Sites that have previously been built on but have become available for new construction due to demolition or degradation of the old building.
Census
An official registration of the number of people (and the valuation of their estate), for imposing taxes and other general statistics of the country. Usually done once every 5 years.
Contractive pyramid
Population pyramid with quite a narrow base, showing recent decline in BR. (STAGE 3 DTM)
Conurbation
One large continuous area created as a city grows, absorbing other towns.
Death rate
Number of deaths per 1000 people per year
Demographic transition
Changing relationship between BR, DR and total population (DTM)
Dependancy ratio
The number of young and old people who rely on the economically active.
(% of
Distribution of population
The way people are spread across an area
Doubling time
Time take for population to double.
Divide growth rate% into 70 - e.g. growth rate 3.5 = 20 yrs doubling time
Emigration
The outward movement of people that involves crossing an international boundary.
Expanding pyramid
A population pyramid with a wide base showing a high BR. (LEDCs in Stage 2 DTM)
Fertility
Number of live births per 1000 women aged 15-49 per year OR average number of children each woman will bear.
Replacement level = 2.1
Forced migration
The migrant has no choice but to migrate due to their situation.
Genocide
The deliberate and systematic killing of people who belong to the same group (racial, social etc..)
Gentrification
Unplanned changes by which a family buy and renovate properties to re-sell and make a profit. The whole area improves and moves upmarket
Green Belt
Area which surrounds a conurbation. Difficult to obtain planning permission here. Acts to stop the sprawl of conurbations.