Lesson 3 Part 2 Review

Demographer

• Scientist who studies human populations
• Scientist who studies animal populations
• Scientist who studies landforms
• Scientist who studies human psychology

Birth Rate

• The number of live births per 1000 people in a year
• The total number of births in a year
• The number of live births per 100 people in a year
• The average number of babies a family has

Death Rate

• The number of deaths per 1000 people in a year
• The total number of deaths in a year
• The number of deaths per 100 people in a year
• The number of live deaths per 1000 people in a year

Desertification

• The spread of dry desert-like conditions
• The loss of forest cover in a region
• The spread of humid tropical conditions
• The growth of cities in desert areas

Population

• The total number of people living in an area
• The number of people per unit of land area (sq. mile or sq. kilometer)
• How people are spread out over an area

Population Density

• The number of people per unit of land area (sq. mile or sq. kilometer)
• The total number of people living in an area
• How people are spread out over an area

Population Distribution

• How people are spread out over an area

• The total number of people living in an area
• The number of people per unit of land area (sq. mile or sq. kilometer)

Describe how rate of world population growth has changed

• Population grew slowly until 75-200 years ago when it began to increase quickly

• Population grew slowly until about 5000 years ago when it began to increase quickly
• Population grew quickly until about 75-200 years ago when it began to increase slowly

• Population has grown slowly since 5000 years ago

Reasons for rapid population growth

• Better food supply, better medicine
• There were shortages of food and water
• The birth rate decreased
• People moved around more

Negative effects of population growth on people

• Shortages of food, water, medicine, and other resources
• Surplus of food, water, medicine and other resources
• A country's standard of living improves
• People build more sustainable buildings