Population Flashcards
What is the study of population called?
Demography
What is the worlds current population?
2016
7.4 billion
Since the 1900s what have we seen to do with population?
Population explosion ( rapid growth)
What is the graph that helps us to understand how population grows?
• population cycle of demographic transition model
What is the definition of birth rate.
b) death rate.
A) number of births per 1000 people in a year.
B) number of deaths per 1000 people in a year
What does the demographic transition model show us?
Total population, birth rate, death rate and if it is a natural increase or decrease
Name the 5 stages of the demographic transition model.
• give 1 piece of information each on death and birth rates.
• example of where this is happening
• and what is causing it to happen (e.g high death rate meaning diseases etc)
Stage 1: • high death rate and high birth rate
• tribal groups - e.g Amazon rainforest
• disease and famine
Stage 2: • falling death rate and high birth rate
• their world countries e.g Mali
• some provision of clean water
• lots of kids ( because not all will survive and help elderly when older)
Stage 3: • falling death rate and falling birth rate
• e.g Brazil
• fewer kids become more survive due to development of health services.
Stage 4: death rate and birth rates are low
• e.g Ireland
• mange people survive to old age and parents plan families.
Stage 5: death rate is greater than birth,
• e.g Germany
• mothers have less kids, most of population are elderly.
What do population pyramids show?
Age groups in four year cycles
• male column on left and female on right
What is population distribution?
2
- the way the worlds population is spread out across the earths surface.
- the distribution of population is uneven. People avoid living in areas with harsh climate, e.g Sahara
What is population density?
(3)
( 2 points in relation to Ireland)
- the average number of people living per km2.
- it can vary between countries. In general the west of Ireland has a lower population density than East.
- e.g Dublin city’s is 4,000/km2 and Paris city is 23,000/km2
Explain the change in population density in west of Ireland.
- pre famine ( when, why there was 1.4m in Connacht, food)
- after famine ( when, population increase or decrease, if increased or decreased why?)
- 1960s - onwards ( what did the government do, what did Ireland join, talk about Celtic Tiger years too.)
- Pre - Famine (1841,1.4m in Connacht), the reason there was many people was because of early marriage and large families, farms with small plots and the dependence of people on the potatoes.
- After Famine (1861, 900,000 pop going down), this was because during the famine thousands died of huger and famine fever in the west of Ireland, many more emigrated too. Family size reduced, as a result the population declined until 1960s.
- 1960s - onwards. The government encourage multinational corporations to invest in Ireland. Ireland joined the EU in 1973. This helped job creation. The Celtic Tiger Years that bargain in 1995 also helped with jobs. Many companies invest in the west too, leading to population growth.
Discuss 3 factors that influence the rate of population growth and decline in devolved and developing countries.
- The first factor is education. The more educated the population especially woman, the smaller the family and lower population growth. When women are educated they are more likely to make a family plan. They learn about children’s diet personal hygiene and importance of clean water for raising children. In developed countries when they see their kids surviving to adulthood told they have fewer children.In the developing countries example Africa they have what children so there is more of a chance of some surviving to take care of them at old-age.
- another factor, improved technology. This increases food supply. Tractors etc make farming more easy. In Germany, cereals example wheat are grown using modern technology. Output of wheat per hectare is high. Dry lands are now under irrigation. Dams provide this. Irrigation greatly increases speed supply.
- another factor is status a woman. Woman now have a higher status in society. The feminist movement began in the 1960s. In 1970 the Irish woman had an average of four children. However now woman have a career and then plan their families. Into thousand and seven the average dropped to 2. In Germany the average children per mother is 1.4 but is now 2.1. The Irish and German population would decline without migration. In developing countries most women have loads status. They have more than 5 kids.
What is the current population of Brazil (2016)
• how is the population disturbition in Brazil?
• where is there high and low density population??
209million
• unevenly across Brazil
• high density along east coast.
• low density inland to west
Name the 3 people in Brazil and explain 2.
1) native tribes ( Yanomi) = Live in the Amazon. Western Brazil before European settlers arrived there was 5 million people. This number has increased to 500,000. Logging companies ranchers plantation farmers and medical companies threaten the survival of the native tribes - home being destroyed
2) Descendants of European Settlers = along East Coast ( Rio de Janeiro, saö Paulo ), arrived in Brazil in the end of the 15th century to the 16th. Set up plantations example coffee sugar cane and needed workers, slaves . They settled along East because mild climate and access to importing and exporting.
3) Descendants of African Slaves
• north East and North East Coast ( Salvador), African slaves were brought to Brazil from West Coast to work on the plantation farms
Why did the government try to encourage people to do in Brazil?
•The Brazilian Government are trying to convince people to move further inland away from the over population high density city along the East Coast.
- new capital Brasilia was made
- people were given land for free near new capital
