Global Population growth

Welcome to GCSE
• Edexcel A exam syllabus
• 75% exam/ 25% coursework
• 3 exams taken at the end of the course in Geographical Skills and
Challenges (1 hour), Physical Geography (1hr 15 mins) and
Human Geography (1 hr 15 mins).
• Skills and challenges = map work and GIS and an investigation of
the major challenges facing the planet today e.g. global warming,
• Physical Geography = Tectonics, Water, Rivers and Coasts.
• Human Geography = Population, Settlement, Tourism, Economic
Population checklist
• Fill in the Population checklist for the start of
the unit.
• Please glue it in your book.
Global Population Growth
• To know the key terms “population”, ”population growth rate” and population
• To be able to compare growth rates graphically and notice patterns in different areas of
the world.
Find someone who…
Population Clock
• How fast is the world's population increasing?
• What are the components of the increase?
• What will the world’s population be at the end
of this lesson?
Key terms:
• Population: the people who inhabit a territory or
• Population growth rate: is the rate at which the
number of individuals in a population increases.
• Population explosion: the expansion of a
biological population, especially the growth in
human population resulting from a decrease in
infant mortality and an increase in longevity.
Population Growth Rate
The world's current growth rate is about 1.3%,
representing a doubling time of 54 years. We
can expect 12 billion people by 2054!
Global Population growth: Model Answers
Using historic and future global population growth describe the overall pattern of global
population growth.
The overall pattern shows an increase in global population between 1750 and projected figures for
2150. Population was under 1 billion in 1750 and is projected to rise to over 10 million by 2150.
Global population has increased rapidly from the 1950s onwards, particularly in LEDCs however, the
growth has slowed in MEDCs since 2000 and is projected to slow further in the future.
• Using historic and future global population growth describe the contribution made by LEDCs to
global population growth.
LEDCs are responsible for contributing the most people to the world’s population. Rapid rise in
population in these countries since the 1950s has led to a population explosion in this part of the
world. By 2150 it is projected that approximately 90% of the world’s population will be inhabitants
of LEDCs.
• Using historic and future global population growth describe the contribution made by MEDCs to
global population growth.
MEDCs show steady population growth between 1750 and 2150. The period of sharpest increase was
between 1900-2000. Since the year 2000 population has leveled out and is set to slowly decline
from 2050 onwards.
• The world’s population is not growing in a uniform way. Some regions of the world are
contributing more to global population growth. How has the global distribution of population
changed since 1800?
• Some continents have contributed a lot more to global growth than others. For example, Asia is
currently home to more than half the world’s population (approximately 60.8%), this has changed
very little since 1800 and is set to continue until 2050. Oceania has contributed the least to global
population growth with just 0.2% in 1800 and a projected 0.5% in 2050. Patterns of growth have
also changed within continents since 1800, for example 20.8% of the world’s population resided in
Europe in 1800. While population in Europe rose steadily to 24.7% by 1900 since then it has
declined rapidly and this is set to continue until 2050 when just 7% of the world’s population will
inhabit this area. Africa, on the other hand, has shown slow growth in population between 18002000 but is set to double by 2050.
•Population clock - review
•What are the implications of current and future
growth rates?
‘While Americans grumble about gasoline prices, food riots have
seared Bangladesh, Egypt and African countries.’
‘Countries like China, India and Indonesia have restricted exports
and rice is shipped under armed guard.’
‘Right now, there is enough grain grown on earth to feed 10
billion vegetarians.’
‘Many agronomists think the world could easily support 20 billion
to 30 billion people.’