Population and movement

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Population and movement

  1. 1. ▪ Students will demonstrate the following enduring understanding▪ Population growth can have both short- term and long-term economic and environmental effects on a place.▪ People choose to settle in areas that meet their basic needs.▪ Migration takes place when people decide that their needs can be better met in a different location.
  2. 2.  Today, the world’s population is around 7 billion. When people first began farming around 12,000 years ago, it was fewer than 10 million. Since then, better food production and healthcare have caused a population boom.
  3. 3.  Demographers are scientist who study human populations. They measure the rate at which population is growing. They compare birth rates to death rates. The birth rate is the number of live births per 1,000 people in a year.  The death rate is the number of deaths per 1,000 people per year.
  4. 4.  The Industrial Revolution brought many changes to the population growth.  Medical Care  Improvements in food  production  Living conditions
  5. 5.  Population growth has positive and negative effects. ▪ For example, a growing population can produce more goods and services. However a rapid growth can also cause problems. The population can grow faster than the supply of food, water, medicine and other resources.
  6. 6.  Population distribution is the spreading of people over an area of land. The world’s population is distributed unevenly on Earth’s surface.  People try to live in places that meet their basic needs. Population density is the number of people per unit of land area.
  7. 7.  For thousands of years, people have migrated to new places.  Migration is the movement of people from one place to another.
  8. 8.  People often migrate within a country. When you migrate from one place of the country to another place in the country it is known as internal migration. Moving from one country to another country is known as external migration.
  9. 9.  When people leave their country, they emigrate, which means to migrate out of a place. To enter a new country is to immigrate, or to migrate into a place.
  10. 10.  People who migrate are often looking for a better life. They may move to escape poverty, a lack of jobs, or a harsh climate. In some countries, war or other conflicts forces people to migrate. These reasons for migration are known as push factors.  Push factors are causes of migration that push people to leave their home country. Other reasons are known as Pull factors. Freedom, supply of jobs are pull factors.
  11. 11.  In many parts of the world people are migrating from rural areas to urban areas.  Urban areas are cities.  Rural areas are settlements in the country. Urbanization is the movement of people from rural areas to urban areas.
  12. 12.  Rapid urbanization has created challenges for growing cities, especially those in poor countries.  These cities cannot provide the housing, school, jobs and other services. ▪ Resulting in slums, or poor overcrowded urban areas. Wealthier countries deal with Suburban sprawl. Suburban sprawl is the spread of suburbs away fro the core city.

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