world population and geography. the world has approximately 7.28 billion people. (why use the...

World Population and Geography

The world has approximately 7.28 billion people.

(Why use the word, approximately, when describing the Earth’s population? Which fundamental idea is shown here?)

What is the world’s population?

http://www.census.gov/main/www/popclock.html

http://www.worldometers.info/world-population/

Let’s Look at World Population Clocks…what do you see?

China- 1.4 billion India- 1.3 billion The USA – 323 million Indonesia – 253 million Brazil – 202 million

Which five countries have the largest world population?

With the study of demography…

Demographers study and describe groups of people who populate the Earth.

Join me in studying the Earth’s demography….

How do we study these people who live on Earth?

Create this T chart: My World’s People Imagine that you could shrink the world’s

population to one hundred people. http://www.youtube.com/watch?v=rvTFKpIaQhM

Who are these people?

Facts about the world’s people that surprise me

Facts that I would like to see improved

Food

Employment

Fuel

Space (Housing)

Clean Water

Clean Air

Medicine

Education

What concerns do we share for the world’s people? Shortages of …

Exponential Population Growth is a constant rate of population growth applied to an increasing population base.

(Watch the following population growth video to see exponential growth…)

http://youtu.be/9_9SutNmfFk

Our world’s population is growing exponentially.

World population milestones (USCB estimates)

Population(in billions) 1 2 3 4 5 6 7 8 9

Year 1804 1927 1960 1974 1987 1999 2012 2027 2046

Years elapsed

–– 123 33 14 13 12 13 15 19

World population milestones (USCB estimates)

How has the rate of population growth changed since 1800?

The J Curve is a graphic that shows our world’s recent prolonged exponential growth of human population.

The J Curve…what is it?

A J Curve is used to show our world’s population growth throughout history…

The J Curve is represented by the red line on this graphic…

Birth of Machines-Increased Food Production

Invention of Medicines/Vaccinations

Improved Sanitation

What events created the J curve?

Shortages of:◦ Land◦ Fuel◦ Food

What are the unintended consequences of the population explosion?

Population Pyramid is useful in viewing a country’s present and future population distribution.

Fundamental Idea #2: The World is constantly changing! How can we prepare for the future?

Where do people live on Earth?

Eastern and Southern Asia Europe North central and Northeastern USA

What do these areas share in common?◦ Northern Hemisphere◦ Middle Latitude

There are three world population clusters

People in the USA are among the world’s greatest migrators. We move on the average every six years.

Migration also involves moving from one country to another.

◦ Emigrate-to leave your homeland for a new country.

◦ Immigrate- to enter a new homeland

Fundamental Idea 5 in action -People move to places that meet their life goals.

Few people live in ◦ Cold areas and high latitudes◦ Deserts◦ High mountains◦ Areas of thick vegetation (central Africa and the

Amazon area of South America)

Where do few people live?

Looking Forward to your Future…

No. Let’s define Overpopulation

◦ Overpopulation occurs when the space or food supply is less than the number of people an area can accommodate.

Are all areas of high population density overpopulated?

What makes a place overpopulated?

We use the term, Carrying Capacity to measure the quality of an area’s population density.Carrying Capacity the maximum population that an area can support without permanently destroying its environment. If a place exceeds its carrying capacity…it is overcrowded!

Sustainability! What is that?

◦ Sustainability is the ability to continue or endure…to maintain the earth’s geography.

http://www.youtube.com/watch?v=B5NiTN0chj0

What is our planet’s goal? Let’s Go Green!

Instructions for Sustainability are:

1. Reduce use of fossil fuels and heavy metals.

2. Reduce use of harmful chemicals.

3. Reduce nature’s destruction.

4. Ensure that we are not preventing people from meeting their survival needs.

Goals of Sustainability:

• Live on Earth responsibly.• Rely on the use of technological

improvements .• Embrace lifestyle changes.• Provide sufficient resources for future

generations. • Lower our carbon footprint by fifty percent

is a goal of sustainability.

http://youtu.be/nJliYqEXfeI

Will you share this story with your children one day? How will the sustainability story end?

Scary Scenes in story

How was sustainability brought to the kingdom?

Population Pyramid Exponential Demography J Curve Emigrate Immigrate Carrying Capacity Sustainability Innovation Overpopulation Carbon Footprint Technology Natural Resource Interdependence

Population Vocabulary