1. Human Population Quiz

2. Population Quiz What is the current world population?
What is the current U.S. population?
What is the average number of children per family in the U.S.? In Germany? In Uganda?
What are the 5 most populated cities in the world?
How has the world population changed in the past 200 years? Why did this happen?
If you were to squish together every person on Earth, how big of an area would that take up?

3. Population Size Now: In 2050: In US? In world? Over 317 million
Over 7.15 billion
In 2050:
392 million
About 9.3 billion

4. Children per Family
In US?
2.0
In Germany?
1.3
In Uganda?
7.1

5. What are the 5 largest cities in the world?
Shanghai, China (18 million)
Lagos, Nigeria (16 million)
Karachi, Pakistan (14 million)
Istanbul, Turkey (13.9 million)
Mumbai, India (12.5 million)

6. Four Largest Cities in the U.S.
NYC – 8.4 million
LA – 3.8 million
Chicago – 2.9 million
Houston – 2.3 million

8. Human Population Growth

9. Human Population Growth
Year Reached
Years to Reach
1 billion
1850
Tens of thousands
2 billion
1930 80
3 billion
1960 30
4 billion
1974 14
5 billion
1987 13
6 billion
1999 12

10. Factors Affecting Human Population Size
Human population is currently growing exponentially:
What will be the ultimate size of the human population?
What is Earth's carrying capacity? (How many humans can Earth support?)
© Brooks/Cole Publishing Company / ITP

11. What do you think?
If we cannot provide the basic necessities for 1 billion people today, how will we provide these necessities to an additional 3 billion people in 2050?

12. Where would the world’s population fit?
Population maps

13. Population Videos

14. CLOCK
World & US clocks