Ch.7 Flashcards
What is I = PAT used for?
To determine the impact of a Nation on the environment
What does the i in I= PAT stand for
Impact
What does the p in I= PAT stand for
Population -number of people
What does the a in I= PAT stand for
Affluence=consumption of resources and waste produced
What does the T in I= PAT stand for
Technology=environmental disturbances caused by processing resources into consumable form or tech developed to offset negative anthropogenic effects.
Is the world overpopulated
No, not yet because the world still has space
How much does a population increase every 5 days
1 million
Describe the growth of the human population
Has been exponential for the last 400 years
Who is Thomas malthus
He is the first one who said we are going to run out of food in 1798
Was Thomas Malthus correct
No, this is because of the invention of fertilizer and now we are able to grow bigger products, and pesticides insects and birds aren’t eating our food, inventions like lawn mowers and irrigations help parts of the earth that are inhabitable be used for growing, and GMOs
Demography
Study of changes in population
how to calculate population size change
(Births +immigration) - (deaths + emigration)
Why does migration not play a role on population growth counts
People stay on Earth
What is CBR
Crude birth rates, number of births per 1,000 individuals
What is CDR
Crude death rate, number of death per 1,000 people
How to calculate % growth rate change
Present population -past population/past population
Then, x100
What is the rule of 70s
The time it would take for the population to double in size
What is the formula for rule of 70s
T = 70 / growth rate or r
T=.7/.r
Population density formula
Population divided by area
What is TFR
Total fertility rate,
The number of babies a woman can expect to have.
Replacement level
The ideal number of children, two children per family to replace the parents
When was the highest population
The 1970 for every country
Life expectancy
The amount of time a person can be expected to live based on year of birth and country
Who lives longer men or woman
Women because they maybe taking care of themselves or they take less risks then men
Why are men and women life expectancy leveling out and becoming equal
Men and women nowadays are doing the same jobs so women are willing to take risks, eventually the life expectancy of women and men will become the same
What is considered a infant
Below or before 1
What is considered a child
1 to 5
What indicates wealth or gpp of a country
Infants mortality rates
What country has the lowest child mortality rates and where does USA rank
1 Singapore , #34 the us