Population Changes How populations grow, shrink, and change.
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Transcript of Population Changes How populations grow, shrink, and change.
![Page 1: Population Changes How populations grow, shrink, and change.](https://reader035.fdocuments.in/reader035/viewer/2022062301/5697bfb61a28abf838c9e575/html5/thumbnails/1.jpg)
Population ChangesHow populations grow, shrink, and change
![Page 2: Population Changes How populations grow, shrink, and change.](https://reader035.fdocuments.in/reader035/viewer/2022062301/5697bfb61a28abf838c9e575/html5/thumbnails/2.jpg)
Remember…
What is population?
Urban vs. rural?
What is the equation for population density?
And why does this all matter?
![Page 3: Population Changes How populations grow, shrink, and change.](https://reader035.fdocuments.in/reader035/viewer/2022062301/5697bfb61a28abf838c9e575/html5/thumbnails/3.jpg)
Another thing human geographers like to look at is…
How populations grow and change, and WHY
To do this, they look at things like: Birth Rate Death Rate Natural Increase Rate Immigration Rate Emigration Rate Net Migration Rate
![Page 4: Population Changes How populations grow, shrink, and change.](https://reader035.fdocuments.in/reader035/viewer/2022062301/5697bfb61a28abf838c9e575/html5/thumbnails/4.jpg)
Video about population changes…birth rate and death rate
http://www.youtube.com/watch?v=VcSX4ytEfcE
![Page 5: Population Changes How populations grow, shrink, and change.](https://reader035.fdocuments.in/reader035/viewer/2022062301/5697bfb61a28abf838c9e575/html5/thumbnails/5.jpg)
Birth Rate
The number of people born each year per 1000 people.# of births / total population x 1000 = BR
![Page 6: Population Changes How populations grow, shrink, and change.](https://reader035.fdocuments.in/reader035/viewer/2022062301/5697bfb61a28abf838c9e575/html5/thumbnails/6.jpg)
# of births / total population x 1000 = BR
500 000/ 500 000 000 = 0.001
0.001 x 1000 = 1
BR= 1%
![Page 7: Population Changes How populations grow, shrink, and change.](https://reader035.fdocuments.in/reader035/viewer/2022062301/5697bfb61a28abf838c9e575/html5/thumbnails/7.jpg)
Death Rate
The number of deaths per year per 1000 people.# of deaths / total population x 1000 = DR
![Page 8: Population Changes How populations grow, shrink, and change.](https://reader035.fdocuments.in/reader035/viewer/2022062301/5697bfb61a28abf838c9e575/html5/thumbnails/8.jpg)
# of deaths / total population x 1000 = DR 400 000/ 500 000 000= 0.00080.0008 x 1000= 0.8DR= 0.8%
![Page 9: Population Changes How populations grow, shrink, and change.](https://reader035.fdocuments.in/reader035/viewer/2022062301/5697bfb61a28abf838c9e575/html5/thumbnails/9.jpg)
Natural Increase
Rate
Natural Increase RateThe difference between the birth rate and the death rate of a country.Birth Rate- Death Rate= Natural Increase Rate
![Page 10: Population Changes How populations grow, shrink, and change.](https://reader035.fdocuments.in/reader035/viewer/2022062301/5697bfb61a28abf838c9e575/html5/thumbnails/10.jpg)
Natural Increase
Rate
BR= 1DR= 0.8BR-DR= 0.2Natural Increase Rate= 0.2
Birth Rate- Death Rate= Natural Increase Rate
![Page 11: Population Changes How populations grow, shrink, and change.](https://reader035.fdocuments.in/reader035/viewer/2022062301/5697bfb61a28abf838c9e575/html5/thumbnails/11.jpg)
Immigration Rate
Refers to the number of people per 1000 population in one year who immigrate
# Immigrants per year/ population x 1000= Immigration Rate
![Page 12: Population Changes How populations grow, shrink, and change.](https://reader035.fdocuments.in/reader035/viewer/2022062301/5697bfb61a28abf838c9e575/html5/thumbnails/12.jpg)
Immigration Rate
25 000/ 75 000 000= 0.000330.00033 x 1000= 0.33IR= 0.33
![Page 13: Population Changes How populations grow, shrink, and change.](https://reader035.fdocuments.in/reader035/viewer/2022062301/5697bfb61a28abf838c9e575/html5/thumbnails/13.jpg)
Emigration Rate
Refers to the number of people per 1000 population in one year who emigrate
# Emigrants per year/ population x 1000= Emigration Rate
![Page 14: Population Changes How populations grow, shrink, and change.](https://reader035.fdocuments.in/reader035/viewer/2022062301/5697bfb61a28abf838c9e575/html5/thumbnails/14.jpg)
Emigration Rate
10 000/75 000 000= 0.000130.00013 x 1000= 0.13ER= 0.13
![Page 15: Population Changes How populations grow, shrink, and change.](https://reader035.fdocuments.in/reader035/viewer/2022062301/5697bfb61a28abf838c9e575/html5/thumbnails/15.jpg)
Net Migration Rate
The difference between people immigrating to a country and people emigrating from the same country.Immigration Rate- Emigration Rate= Net Migration Rate
![Page 16: Population Changes How populations grow, shrink, and change.](https://reader035.fdocuments.in/reader035/viewer/2022062301/5697bfb61a28abf838c9e575/html5/thumbnails/16.jpg)
Net Migration Rate
Immigration Rate- Emigration Rate= Net Migration Rate0.33- 0.13 = 0.2