7 BILLION World Population
What is population? • Population is the total number of people in a given area.
How do they determine population? • Birth rate is the annual number of births per 1,000 people. • Death rate is the annual number of deaths per 1,000 people. • The United States Census
United States Census • Mandated by the U.S. Constitution • Conducted every 10 years • U.S. Census Bureau is responsible for the U.S. Census • Next census scheduled for 2020 • Other surveys give information in between years
United States Census Questions • How many people were living or staying in this house, apartment, or mobile home on April 1, 2010? • Were there any additional people staying here April 1, 2010 that you did not include in Question 1? • Is this house, apartment, or mobile home: owned with mortgage, owned without mortgage, rented, occupied without rent? • What is your telephone number? • Please provide information for each person living here. Start with a person here who owns or rents this house, apartment, or mobile home. If the owner or renter lives somewhere else, start with any adult living here. This will be Person 1. What is Person 1's name? • What is Person 1's sex? • What is Person 1's age and Date of Birth? • Is Person 1 of Hispanic, Latino or Spanish origin? • What is Person 1's race? • Does Person 1 sometimes live or stay somewhere else?
World Population Timeline • 1800 = 1 Billion to 1930 = 2 Billion • 1930 = 2 Billion to 1960 = 3 Billion • 1960 = 3 Billion to 1974 = 4 Billion • 1974 = 4 Billion to 1987 = 5 Billion • 1987 = 5 Billion to 1999 = 6 Billion • 1999 = 6 Billion to 2011 = 7 Billion Approximately 130 years 30 years 14 years 13 years 12 years 12 years
A different view: http://www.globalchange.umich.edu/globalchange2/current/lectures/human_pop/human_pop.html
When did our population reach 7 billion? • According to the United Nations, the world population reached the 7 billion mark on October 31, 2011. • At 5.5 lbs., Danica May Camacho was born in the Philippines. She was chosen by the United Nations to be one of several children around the world who will symbolically represent the global population milestone.
How quickly is the world population changing right now? • http://www.worldometers.info/world-population/
How does this affect our planet? • http://www.youtube.com/watch?v=sc4HxPxNrZ0
TURN AND TALK How will the growing population affect you, your neighborhood, and the global community? How will it impact our environment now and in the future?