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Population as a term can be described in two ways: Population DENSITY and
Population DISTRIBUTION.
DISTRIBUTION
"The way in which people are spread over a given area"
Places with many people usually have habitable environments and are usually MEDC
or NIC's. Large populations can be found in accessible areas with good resources
and these include fertile soils for farming, good supply of raw materials e.g. Iron
ore for industries to use, coastal plains which encourage moderate climates and
good shipping links worldwide. Countries include the UK, USA and Europe.
Places with a sparse population usually have hostile environments e.g. The Sahara
Desert and Antarctica. Hostile environments are places without important
resources with extreme temperatures. High altitudes, poor soils and steep slopes
make places hard to access and make farming impossible ­ The Andes.…read more

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Density
"population density is the average number of people living in an area ­ it is given as
people per square km."
The terms `sparsely populated' and `densely populated' are used to refer to areas with
and high and low population densities.
Having an ideal population density gives us an optimum population which means there
is an ideal number of people for the resources available.
In order to gain a true reflection of a place, both the term `density' and `distribution'
must be used. A country could be described as densely populated (density) with an
evenly spread population with small selections of people inhabiting many areas of
the country (distribution) or sparsely populated with an uneven spread population
with high concentrations of inhabitants in the west an d know in the east.…read more

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Population Growth.
The worlds population is growing very rapidly.
Not only is the fact population has increased important, but also that the rate of
increase has sped up. There has recently been a `population explosion' due to a
dramatic drop in death rate because of better medical care.
Terms you need to learn:
Birth rate: The number of live babies born per 1000, per year within a country.
Death rate: The number of deaths per 1000, per year within a county.
Migration: the amount of people moving in or out of a country.
The difference between birth and death rate can be classified as natural increase or
natural decrease.…read more

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DTM
The population of a country changes over four stages of the DEMOGRAPHIC
TRANSITITON MODEL. Stage five has recently been added to depict the population
decline in some MEDC's.
STAGE ONE: High death rates along with High Birth rates allow a countries population
to remain low and stable (LEDC)
STAGE TWO: Death rate begins to fall rapidly however birth rate remains high.
Population begins to grow. (LEDC)
STAGE THREE: Death rate remains low and the Birth rate also begins to fall.
Population continues growing. (LEDC)
STAGE FOUR: Death rate and Birth rate both low so the population is stable and high.
(MEDC)
STAGE FIVE: Due to advances in health care and better sex education available, the
birth rate falls below the death rate and the population begins to decrease. (MEDC)
On a DTM model, there will be three lines to identify. One line showing the birth rate,
one showing the death rate and a final one showing the total population of the
stage.…read more

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Population Pyramids.
Population Pyramids are used to show, in terms of a shape, the population structure of
a country. The pyramid is split in two, with males shown on the left and females on
the right.
Population Pyramids that show an LEDC country usually consist of a typical pyramid
shape (wide base, narrow top). This is because birth rate is high and so is death
rate.
Population pyramids that show an MEDC are usually more rectangular, this is due to
lower birth rates and higher life expectancies.
The structure of a population is determined by the proportion of males and females
and the proportion of people in different age groups.…read more

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