R.A.+Population

__//**Population**//__

**__// Activity #1: //__** **//__Population Explosion__//** [|World Population Clock] ~One birth every 8 seconds
 * //__By how much does the population grow in 1 minute? How many people is that per second? Per week?__//

[|State and County Quick Facts] ~Geography
 * //__How does your county population compare to the number of people the world population grows by each week? Are you surprised by the results?__//

[|Historical Estimates of World Population] ~1999-2000
 * //__In what year did the world population start to suddenly increase? What do you think might be the cause for this?__//

[|World HyperHistory] ~The health care system was bad then and now it is great they keep more people alive. also farming has improved so that means feeding more people.
 * //__How might historical events or the quality of life during different historical periods have influenced population growth?__//

[|Population Growth Rate Map] ~Asia
 * //__In what areas of the world has the population been growing most rapidly? Why do you think this is?__//

**//__Activity #2:__//**__//**Factors in Population Growth**//__ T he natural increase of a population depends on the number of births and deaths. If the number of births is greater than the number of deaths at any given point in time there will be natural increase in the number of people. Typically, the growth rate of a population is given in terms of the birth rate (number of births per 1000 people per year) and death rate (number of deaths per 1000 people per year).

~The birth and death rates are close. 1 birth every 8 seconds, 1 death every 12 seconds.
 * //__ Write an equation that expresses the growth rate of a population in terms of the birth rate and death rate. __//

~More developed countries
 * //__ What circumstances might result in a high birth rate for a population? A low birth rate? __//

~Areas in the world that aren't suitible to live in, as in like africa. or in the city its not like death is super high.
 * //__ What circumstances might result a high death rate for a population? A low death rate? __//

[|Birth and Death Rates] ~Because birth rates are still higher than the death rates. 8 to 12 seconds, its faster than the death rates.
 * //__ If both birth rates and death rates are declining worldwide, why is the world's population still increasing? Based on this birth rate and death rate information, what could you say about the world's growth rate in recent years? __//

[|IDB Summary Demographic Data] ~282,172
 * //__ In 2000, what was the estimated total fertility rate and life expectancy in the U.S.? __//

[|birth rates and fertility rates] ~Over a million more.
 * __// Between 1920 and 1999. How might fertility rate affect the birth rate? How might it ultimately affect the population growth rate? //__

[|life expectancy at birth] ~
 * __// Between 1900 and 2000 (all races, both sexes). How might life expectancy affect the death rate? How might it ultimately affect the population growth rate? //__

~Birth rate- death rate + immagration - emigration= total population.
 * //__ For countries, states, and regions, the population growth rate is also affected by the rate at which people migrate across regional boundaries. Net migration is the difference between immigration (movement into a region) and emigration (movement out of region.) Write an equation that expresses the growth rate of a population in terms of the birth rate, death rate, immigration rate and emigration rate. __//

~If you live in a bad enviroment
 * //__Can you think of any other factors that might affect the growth rate of a country?__//