Unit 2 Key Questions Flashcards
4 main population clusters
- South Asia
- Europe
- East Asia
- Southeast Asia
South asia population cluster
- India is the main country
- 1.5+ bul people
- About 20% of humanity
- Nearly 20 percent of humanity in India
- About 60% rural
Europe population cluster
- About 3/4 billion people
- 11 percent of humanity
- About 3/4 urban
East Asia population cluster
China is main country
- More than 1.5 bil people
- More than 20% of humanity
- About 20 percent of humanity in China
- 50% rural
Secondary population clusters (2)
Eastern North America
West Africa
Eastern North America population cluster
Northeaster United States and Southeastern Canada
West Africa population cluster
Along the Atlantic Coast, especially the portion facing the south
-Nigeria most populus country in Africa
What does Non-Ecumene mean
Areas of Earth that people do not want to live on/populate because it it too dry, wet, cold, or mountainous for activities involving agriculture
Overtime, what has happened (continueing to happen) to the percent of the Earth that is ecumene versus non-ecumene
- Some places progress from livable to unlivable and vice versa if you change the environment
- Ecumene is increasing bc people change and adapt to the environment to make it livable
Sparsly popualted land
Dry lands
Wet lands
Cold land
-High lands
Reasons for in hospitality Dry land
Lacks sufficient water to grow crops that could feed a large population
Reasons for in hospitality Wet land
Combination of rain and heat depletes nutrients from coil-> hinder agriculture
Reasons for in hospitality Cold lands
Ground is always frozen-> permafrost, unsuitable for planting corps-> too cold
Reasons for in hospitality High lands
Steep, snow covered, sparesly settled
-Sometimes possible agriculture if they are more densily populated and at low latitudes (near equator)
Types of density
Arithmetic
Physiological
Agricultural
Arithmetic density def
What does a low and high number mean
-AKA average density
The total number of people in an area.
Total number of ppl divided by total land area
-A low number means that it isn’t super crowded
-A high number means that is very croded
Physiological density
- AKA farmland density
- Number of people supported by a unit area of arable land
- Understands the capacity of the land to yield enough food for the needs of the people
- Total population divided by total arable (food producing) land
- Shows why people live where they live-> food source
- Comparing physiological and arithmetic densities helps geographers understand the capacity of the lands to yield enough food for the needs of the people
- A low number means that there is a lot of land to produce for the people so they are not starving
- A high number means that a lot of people rely on a little land for food and the food supply is low
What occurs the higher the rate of physiological density
The less crops produced
Agricultural density
The ratio of the number of farmers to the amount of arable land
- Developed countries have lower agricultural densities than developing countries because they have more machines and finance to farm large areas of land
- America is lower bc machines
- A larger number means that there are a lot of farmers and that their methods of farming is inefficient
- Helps account for economical differences between countries
How is relationships between population and resources in a country understood
Compare physiological and agricultural densities
-Physiological densities of Netherlands and Egypt are high but Dutch has lower agricultural density which indicates that the Dutch and Egyptians put heavy pressure on the land to produce food, but the Dutch agri system is more efficient and requires fewer farmers
What is crude birth rate
The total number of live births in a year for every 1000 people alive in the society
What is crude death rate
The total number of deaths in a year for every 1000 people alive in society.
What is natural increase rate
Percentage by which a population grows in a year subtract CBR-CDR to get NIR. NIR is a % so multiply number gotten by 100.
Describe NIR through most of human history
Essentially 0, Earth’s population unchanged at about .5 mil people
Describe NIR at it’s peak
2.2 percent in 1963 and 87 million more people each year
Describe NIR currently
1.2 percent
82 million more people each year
What is double timing and what is the current one
The number of years needed to double a population, assuming a constant rate of natural increase. At current rate, (1.2 percent per year) our population would double in 54 years
What is total fertility rate or TFR
The average number of children a woman will have through her child-bearing years (15-49). Attempts to predict the future behavior of individual women in a world of rapid culture change
What is the global average TFR
2.5
Note the rate and locations of global highs and lows in TFR
High: sub Saharan Africa (exceeds 5) , Third world countries (Africa) with low CBR
Low: Developed countries, (America, Europe, Asia) with low CBR (Nearly all European countries have a TFR of 2 or less)
Define infant mortality rate
Annual number of deaths of infants under 1 year of age compared with total live births expressed as a per 1000 number
Define life expectancy
The average period that a person in a certain area may expect to live
How are the mortality rates distributed globally in terms of the developed and developing worlds
Higher life expectancy and lower infant mortality in developed countries
Lower life expectancy and higher infant mortality rate in developing countries
Describe a population pyramid
Shows the percentage of total population in 5 year age groups with the youngest group (0-4) at the bottom and the oldest group at the top. Length of bar shows the % of total population contained by that group. Males usually on the left and females on the right
Why do some population pyramids in the U.S. differ by state
Because of different ethnicity and age group people want to live in certain states
(Texas- hispanic, broad pyramid, Florida- reverse pyramid bc old ppl)
Dependency ration
The number of people who are too young or too old to work, compared to the number of people who are in their productive years
ppl 0-14 + ppl 65+ divide by ppl 15-64 (workforce)
How does a large number of youth dependents strain a counntry
The greater the dependency, the more financial burden on those who work
How does a large number of elderly dependents strain a country
Labor force has to work to support old people who can’t work
What is the dependency ratio in Sub-saharan Africa and Europe
SSA- 85%-> high percent of old ppl
Europe- 47% equal number of 0-14 and 65+ and work force
Sex ratio
The number of males per 100 females in a population
Why do developed countries have a higher female sex ratio
On average women live 7 years longer than men
What theory does the text present as to why China and India have a higher male sex ratio
There are more male babies bc female fetuses are being aborted
What is the demographic transistion model
A process of change with several stages and every country is in one of the stages
-Model consisting of 4 stages that helps to explain rising and falling of natural increase
What demographic transition model characteristics do developed countries have
Lower rates of:
- Natural increase
- Crude birth
- Total fertility
- Infant mortality
What demographic transition model characteristics do developing countries have
Higher rates of:
- Natural increase
- Crude birth
- Total fertility
- Infant mortality
Demographic transition Stage 1
-Weird triangle
CBR up
CDR up
NIR: not much growth
-There are no countries currently in stage 1
Most of humanity’s history is in this stage
Demographic transition Stage 2
-Triangle CBR up CDR declining NIR up high Fast growing -Europe and North America in this stage after industrial revolution bc more wealth for better living
Demographic transition Stage 3
-Extended triangle/pentagon CBR down CDR down NIR up to moderate Moderate growth -CBR drops sharply -Some population growth bc CBR more than CDR -Ppl more likely to live in cities -Ppl want less kids
Demographic transition Stage 4
-Column
-CBR down
CDR down
NIR up to 0
Slow growth
-V low birth and death rates and virtually no long term increase and possible decrease
-Zero population growth (ZPG) can occur when CBR is a little more than CDR but more accurately defined as lower TFR bc women enter labor force
Demographic transition Stage 5
Reduced or shrinking pentagon
- Japan
- Germany
- Hungary
- v low CBR
- Higher CDR (elderly dying)
- Negative NIR
- Few women in child bearing years
- Low base (few kids), more elderly
Examples of countries in stage 1
None
Examples of countries
in stage 2
Cape verde
Laos
Mazambique
Examples of countries in stage 3
Chile
Mexico
Brazil
Examples of countries in stage 4
U.S.A
Denmark
Uraguay
Explanation of how countries move out of a stage and into the next 1 to two
When death rates decline sharply
Explanation of how countries move out of a stage and into the next 2 to 3
When birth rates declined sharply
Explanation of how countries move out of a stage and into the next 3 to 4
When CBR= CDR and NIR is 0ish
Explanation of how countries move out of a stage and into the next 4 to 5
United states
Medical advancements
Women working