Population Pyramids

• Is a demographic snapshot of a society at any point in time
• gives in site in whats happening in a society
• , so is the population increasing or decreasing ; how can you tell?

HOW CAN I READ THIS ; does this come in english?

• First the male and female / genders are divided
• the x-axis starts at zero in the middle of the graph
• y-axis goes up and down increases age , duh!
• The age increases +5 each time
• Also don't forget to read the population in millions or thousands

Age divisions

• We can divide it into 3 main age divisions
• Old brackets , baby brackets, and Bearing brackets

POPULATION PYRAMIDS

Bearing Brackets

• Above 55-65 years of age
• top of pyramid, very small number due to chronic disease and health prob.
• no offense, they do not do anything to contribute to society
• These people , usually do not work , take care of children, or pay taxes
• one of the dependent groups;depends on bearing brackets

Bearing brackets

• Hold the weight of everyone like baby and old brackets
• most important people in society , they keep things moving
• usually 15-50 years of age
• located around the middle of pyramid
• also the baby makers and takers , thanks mom!

BABY BRACKETS

• Don't work or contribute to society
• usually 0-15 years old
• one of the other dependent groups in society, depends on bearing brackets
• located in base of pyramid
• If the base is wider than the bearingb. then fertility rate is 2.1=replacement level

Three main pyramid shapes

• classic, cool column , intriguing inverted
• no state or place will have the same type of pyramid shape 50 years later
• Events happen over time demographic transition occurs

Classic pyramid shape

• rapid growth rate,high fertility. High pop. growth
• usually states or countries with this type of pyramid are mid to late stage 2
• People are mostly farmers and work in factories
• Poor healthcare and high infant mortality rates so low population , ah..
• Mostly earn money through export of agriculture and raw resources

Cool Column Shape

• slow,stable rate, fertility rate is mostly the same every year
• Countries that are fully developed have this so stage 4 maybe 3
• Mostly urban, people work in sector, fully developed, small family size
• high costing and health care

Untitled Slide

Intriguing inverted

• Negative population growth, wait what?, you must be thinking..
• people are cautious about having children, they only have 1 causing a decrease in pop.
• Late Stage 4 and 5 countries
• Post industrial, work in service sector,everyone urbanized, accessible health care

Population Momentum

• low fertility population=continuous expansion
• As soon as a stable time fertility is chosen

Advantages and disadvantages

• shows long term plans & cultural tendencies
• Government policy can affect a countries population
• Ex. China sets a tax policy for families with two or more children

Factors that can affect the transition

• Immigration-people moving to a country because of lack of resources
• emigration-people moving away from a country because of lack of resources
• male& female favoritism- some cultures prefer to have males since there is a sense of economic award
• males - can pass of the family name for generations while women loose their name when they engage
• male &female favoritism has led for female babies to be aborted, abandoned , and even killed