Question of the Day 10/8

• Does the developed world have a moral obligation to solve population related issues around the world?

Question of the Day 9/27

• Take out your spiral. Do you think the world is overpopulated? Why or why not?

Population Lights

• http://www.youtube.com/watch?v=4BbkQiQyaYc

Introduction to Population

Cy-Woods HS

2013-2014

Population Growth

• It took until the year 1850 for the world to reach one billion people.

How much is one billion?

• The population of Houston is 2.1 million.

• If you had a million dollars in thousand dollar bills, it would be 4.3 inches tall.

• If you had a billion dollars in thousand dollar bills, it would be 358 feet tall! (~35 stories tall)

How much is one billion?

• It took you 11.6 days to be alive for a million seconds.

• It will take you 31.7 years to live for a billion seconds.

How much is one billion?

• In a supersonic airplane, you could travel one million miles in 31 days.

• It would take 85 years to travel one billion miles in that same airplane.

Population Growth

• In 2011, the population of the world reached 7 billion!

China and India

• China and India are both over 1 billion people.

• China = 1.3 billion

• India= 1.2 billion

• India is growing faster than China. They should catch up by 2050.

World Clock

• http://www.poodwaddle.com/clocks/worldclock/

Population

Population Density

• People live on only ~10% of the Earth’s surface.

• Why?

Most live in East or South Most live in East or South Asia, Europe, and the Asia, Europe, and the Northeastern USA.Northeastern USA.

Why do people live in particular areas?

• Moderate climates

• People prefer to live in places not too hot or not too cold.

Why do people live in particular areas?

• Close to water

Why do people live in particular areas?

• Proximity

• People stay close to where they came from

Why do people live in particular areas?

• The Industrial Revolution (18th and 19th c.)

• Caused a population shift as people moved from rural to urban areas.

Urbanization

• The dramatic rise in the number of cities and the changes in lifestyle that result.

• There are now more people in cities than in rural areas.

Demographic Statistics

• Population density

• The number of people living in a given area.

U.S. = 83 per sq. mi.

Bangladesh = 2,559 per sq. mi.

Demographic Statistics

• Fertility rate

• the average number of children a woman will have in her lifetime.

• Niger = 7.68• U.S. = 2.06

Demographic Statistics

• Rate of Natural Increase (RNI)

• Birth rate - Death rate

• Number of births or deaths per 1000 people in a year.

Question of the Day 10/9

• What is the population of the United States?

Turn your mapInto the basket.

Demographic Transition Model

Stage 1: Slow Growth

• Population grew very slowly.

• Many children born, but also many die.

• Most people are farmers.

• Growth pattern until the 1700s.

Stage 2: Rapid Growth: LDC

• Hygiene and medical technology increases.

• Lots of babies being born and less are dying.

• Population increases dramatically in poor countries.

• Now reaching poor countries.

Stage 3: Slow Growth or No Growth: MDC

• Population begins to level off.

• People have less kids as they become wealthier.

• Kids are no longer an asset.

• Immigration is often the only reason they see any growth.

The U.S. is in Stage 3

Stage 4: Negative Growth: MDC

• More people are dying than are being born.

• Sometimes incentives given for more children. Abortion sometimes illegal.

Japan and most of Europe arein Stage 4

4 Minute History of the World

• http://www.youtube.com/watch?v=jbkSRLYSojo

Overpopulation

• Carrying capacity

• the number of people a region can support with minimal negative effects

• reached when resources available can no longer support the population.

Carrying Capacity

• Which has a larger carrying capacity?

Consumption of the World’s Resources

How do we avoid exceeding our carrying capacity?

Technology!

4 Minute History of the World

• http://www.youtube.com/watch?v=jbkSRLYSojo

Overpopulation

• http://www.youtube.com/watch?v=4BbkQiQyaYc