Population Flashcards
Emigration definition
act of leaving the country to live in another country
Birth rate definition
the number of births in a year per 1000 population
Death rate definition
the number of deaths in a year per 1000 population
Net immigration definition
more people coming to live in the country than people leaving the country to live elsewhere
Define infant mortality rate
the number of deaths per 1000 live births in a year
Define net migration
difference between immigration and emigration
Define a natural increase in population
when birth rate exceeds death rate
Factors influencing death rate (4)
nutrition
medical care
involvement in military action
lifestyle
When will birth rates be high (5)
young average aged population
infant mortality rate is high
women are not well educated
cheap to bring up children
lack of government care for elderly/sick
Factors that influence net migration (2)
living standards at home and abroad
discrimination on groups/extent of control on people
Define dependency ratio (2)
proportion of population that has to be supported by the labour force
Number in dependent age groups/Number in labour force x 100
Define optimum population (3)
number of people
when combined with other resources of land, capital and existing technical knowledge
gives the maximum output of goods/services per head of population
Positive effects of an increase in population (5)
population is below optimum = make better use of its resources
market size will increase
extra demand
increase in labour force
increase in factor mobility - industries can recruit more workers familiar with new methods
Negative effects of an increase in population (6)
famine - overpopulation + low agricultural productivity
restrictions on living standards - resources used on living standards are used to satisfy needs of extra population
overcrowding
environmental pressure
employment - government has to devote more resources to training the new increase of people
balance of payment - rise in imports
Consequences of ageing population (5)
rise in dependency ratio
change in labour force - loss of experienced workers
higher demand for healthcare/welfare services
increase cost of pensions
change in pattern of demand