human geography test 1

Geography
how many people live on the planet earth?
7 billion
is not a matter of the total number of people on earth, but rather it depends on the relationship between the number of people and the availability of recources
overpopulation
a threat where an area’s population exceeds the capticity of the environment to support it at an acceptable standard of the living
overpopulation
the places where humans are msot clustered up
East Asia, South Asia, Southeast Asia, and Europe
the total number of people divided by total land area
Arithmetic density
geogrpahers rely on this to compare conditions in different countries because the two peices of information needed to calculate the measure are easy to obtain
Arthmetic density
divide the total population by the land area
Arthmetic density
land that is suited for agriculture
arable land
the number of people supported by a unit area arable land is called
physiological density
the higher the physiological density the higher the
pressure that people may place on the land to produce enough food
provides insights into the relationship between the size of a population and the availability of resources
physiological density
the ratio of the number of farmers to the amount of arable land
Argicultural density
measuring agricultural density helps account for economic differences
Agricultural density
have lower agricultural densities because of the technology takes up space
developed countries
to understand relationships between population and resources in a country, geographers examine a country’s
physiological and agricultural densities togeather
the percentage by which a population grows in a year
natural increase rate (NIR)
how many people are being added to the population of the world annualy
82 million
the number of years needed to double a population assuming a constant rate of natural increase
doubling time
how much will the global population be in the world by 2100
24 billion
where is 97 percent of lcustered at?
developing countries
the total number of live births in a year for every 1,000 people alive in the society
Crude birth rate (CBR)
hwo many babies are born for every 1,000 people?
20 over a 1 year period
the total number of deaths in a year for every 1,000 people alive in society
Crude Death Rate
how is the NIR computed?
subtracting CDR from CBR, the convert the 2 measures from numbers per 1,000 to percentages
when the number of births exceeds the number of deaths by only a small margin what happens to population?
increases
is the average number of children a woman will have throughout her chilbearing years
total fertility rate (TFR)
the annual number of deaths of infants under 1 year of age for every 1,000 live births
Infant mortality rate (IMR)
is usually expressed as the number of deaths among infants per 1,000 births rather than as a percentage
Infant mortality rate (IMR)
where are the highest IMRs?
poor countries like sub-saharan africa
where are the lowest rates?
Europe
measures the average number of years a newborn infant can expect to live, assuming current mortality levels
Life Expectancy
how old are msot of the people in developing countries?
15
the number of people who are too young or too old to work, compared to the number of people in their productive years
dependency ratio
a bar graph that displays the percentage of a palce’s population for each age and gender
population pyramid
a process with several stages and every country is in one of them
demographic transition

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