Birth Rate : number of
birth that take place in a population
over a year . The birth rate (BR) is calculated by dividing the number of birth
in an area over a year by the total population ; the result is the multiplied
by 1000 .
Death Rate: number of
death that take place in a population over a year . The death rate (DR) is
calulated by dividing the number of deaths in an area over a year by the total
population and multiplying the result by 1000.
Natural
Increase: is the number of birth minus the number of death .
(RNI) RATE NATURAL INCREASE It can be
calculate but dividing the natural increase by the total population and
multiplying the result by 100.
Infant
Mortality Rate: Is the number of deaths of infants under 1 year
dividing by the number of birth in a year , per 100
Life Expectancy
: is the average
years that one person may expert to live. It also shows welfare and economic
and social status of a country .
Birth Control:
methods of restricting the number of children born,
usually through control or prevention of conception;
contraception.
Dependent Population: those
who rely on the working population for support e.g. the young and elderly.
Dependency Ratio
: the ratio
between those of working age and those of non-working age. This is calculated
as: % pop aged 0-14 +% pop aged 65+% of
population aged 15- 65 x 100
Family Planning
: using contraception to control the size of your
family.
Population
Piramids : a graph which shows the age
and sex structure of a place.
Replacement
Rate : percentage of a worker's pre-retirement income that is
paid out by a pension program upon retirement
Fertility Rate:
The average number of children born to a woman in her
lifetime.*1000
Ageing Population: is
a phenomenon that occurs when the median age of a country
or region increases due to rising life expectancy and/or declining fertility rates.
Population
Distribution: is how people tend to live in uneven clusters on
Earth's surface.
Population Density: i s
when you try to find out how many people live in an area, how you find the
number of people that live in an area is you divide that number by square miles
or square kilometers.
A More
Economically Developed Country (MEDC) : Countries with more resources,
salaries and housing accessibility's are MEDC’s , have a lower birth rate and
also a low death rate due to advanced Medical Technology and has low baby population and high elderly population
.
Less
Economically Developed Country (LEDC): have
a high birth rate and
also a high death rate due to poor health care and a
different type of diseases The countries are also very poorly developed and the
birth rate is high. Life is rather hard and people don’t have much money to get
resources.
Overpopulation: the condition
of having a population so dense as to cause environmental deterioration, an
impaired quality of life, or a population crash
Underpopulation: lacking the normal or required population density.
