Transcript World Population Distribution

WORLD POPULATION DISTRIBUTION
TODAY’S LESSON

Title: World population distribution

Date:11/04/2016

Aim: To find out about the distribution of people
living in the world and to find out the factors
that affect this.
LESSON STARTER
 Think
of one place in the world
where many people live and
another one where very few people
live. Write them down.
 Beside
each one write down the
reason that they are highly
populated or not.
INTRODUCTION
 Even
though the population has reached over
7 Billion people the world is not yet
overcrowded. In fact it is not even crowded.
 There
are on average, only 24 people to
every square mile of land.
•
Some areas are much more crowded than this,
but there are also a lot of empty areas.
•
The world’s population is scattered very
unevenly.
WORLD POPULATION DISTRIBUTION
Population of a country
Area of country (sq mi)
=
Population Density
(people per sq mi)
Population: 298,444,215= 84 people / sq mi
Area: 3,539,225 sq mi
Population: 127,463,611 = 836 people / sq mi
Area: 152,411 sq mi
POPULATION DISTRIBUTION

Population distribution is the spread of people
over an area.
Densely populated means that there is a lot of
people in a small area.
 Sparsely populated means that there is very
little people in an area.

The population density is very
sparse in the areas of the
highlands to the North West
and North central.
Scotland is most densely
populated along the central
belt around areas such as
Glasgow and Edinburgh.
There are also pockets of high
density population in major
cities along the East coast,
such as Dundee and
Aberdeen.
REASONS FOR THIS UNEVEN DISTRIBUTION IN
POPULATION:
Climate
 Relief
 Soil and Vegetation
 Economic Activity
 Development
 Standard of Living

THE IMPORTANCE OF CLIMATE
Polar regions
Few people
Lots of people
POLAR REGIONS HAVE FEW PEOPLE
BECAUSE:
It is impossible to grow crops,
so food is expensive.
Building is very
difficult because
of the permafrost
underneath.
It is difficult
and expensive
to survive in
such conditions.
They are very remote, due to the poor
weather and lack of roads and railways.
THE IMPORTANCE OF CLIMATE
Very Dry Regions (hot deserts)
Few people
Lots of people
HOT DESERT REGIONS HAVE FEW PEOPLE
BECAUSE:
Living in extreme heat and drought is
unpleasant to most people
It is impossible to
grow without
irrigation so food
is expensive
They are remote and unlikely to attract
industries, so there are few job
opportunities.
THE IMPORTANCE OF CLIMATE
Regions with moderate climate and reliable water
supply
Few people
Lots of people
REGIONS WITH A MODERATE CLIMATE AND RELIABLE
WATER SUPPLY ARE MORE CROWDED BECAUSE:

It is a comfortable climate in which to live.
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No extra costs needed in order to cope with the climate.

Farmers have steady harvests from year to year because
the climate is reliable.
THE IMPORTANCE OF RELIEF
Relief means how flat or how mountainous the land is.
Which one has the highest population density?
Steep Moutainous
Regions
Flat and gently
sloping areas
STEEP, MOUNTAINOUS REGIONS HAVE A
LOW POPULATION DENSITY BECAUSE:
They are very cold
(except in the tropics)
and so living and farming
conditions are harsh.
It is too steep for
roads are railways,
so the areas are
remote.
It is too
steep on which to build
houses and factories and
to use farm machinery, so
job opportunities
are few.
FLAT AND GENTLY SLOPING AREAS HAVE A
HIGH POPULATION DENSITY BECAUSE:
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It is easy to build houses and factories.

Farming is more productive because the soil is
deeper and machinery can be used.

Roads are railways can be built, which
encourages industry.
THE IMPORTANCE OF SOILS AND VEGETATION
Tropical Rainforests
Areas with poor soils
The hot humid
climate is
uncomfortable in which
to live.
Dense forest is
difficult to clear in
order to build houses,
roads etc…
Soils are very poor,
once the trees have
been cut down.
Crops grow so badly
that farms have to be
very large for the
farmer to make a
large profit.
Areas with fertile soils
Crops grow very
well and so farms are
smaller.
THE IMPORTANCE OF ECONOMIC
ACTIVITIES
Farming Areas
Industrial Areas
Each family needs a
large area to make a
living (unless the soil is
extremely fertile)
Factories and offices
take up a small area,
yet provide many jobs.
THE IMPORTANCE OF DEVELOPMENT
Areas with
low levels of
development
Farming methods will be
poor and there is little
farm equipment, so farms
need to be quite large.
There are a few
factories and offices,
as there are not
enough skilled workers,
managers or money
available.
THE IMPORTANCE OF DEVELOPMENT
Areas with
high levels of
development
Most people work in offices and factories which need
large populations nearby.