The geographically informed person must understand that the growth, spatial distribution, and movements of people on Earth’s surface are driving forces behind not only human events but also physical events. Human population is a dynamic force in reshaping the planet. Advances in agriculture, sanitation, and health care have contributed to a dramatic increase in the number of people over the last few centuries. At the beginning of the twenty-first century, the world’s population transitioned from being primarily rural to primarily urban.
Therefore, Standard 9 contains these themes: Characteristics of Population, Spatial Distribution of Population, and Migration.
The interaction between human and environmental conditions helps to explain the characteristics, spatial distributions, and movements of human populations. These characteristics can be described in terms of demographic concepts such as fertility and mortality rates, crude birth and death rates, natural increase and doubling time, race and ethnicity, and population structure (i.e., age distribution and age/sex ratio).
Population pyramids show the age and sex of a population. They also illuminate the impacts that wars or famine as well as education levels, urbanization, religion, or population policies have on the population in a country or region.
The spatial distribution and density of the world’s population reflects a variety of factors. These include the influence of such physical features such as topography, soils, vegetation, climate types, and the availability of resources. Population distribution and density are also affected by human factors such as geopolitical structures, levels of economic development, and quality-of-life issues that address education, health care, housing, and employment opportunities. People move from place to place for voluntary and involuntary reasons. Pull factors may make another place seem more attractive and beneficial and therefore convince people to migrate. Push factors are often unpleasant or life-threatening conditions that force people to leave a place.
Movement occurs on many scales such as families moving to the suburbs, job seekers moving to a more prosperous part of the country, or mass migrations of people to other countries due to famine or political unrest. Moves may take place over distances from a few miles to thousands of miles. Some people move many times in their lifespans, others never. Some migration streams persist over several generations or centuries.
Students must understand how the characteristics, spatial distribution, and movement of human population change. Understanding these themes enables students to understand the essential connection between human population and social, political, and ecological issues.
1. Demographic characteristics can be used to describe a population
Therefore, the student is able to:
A. Describe and compare the demographic characteristics of people in the local area, as exemplified by being able to
2. People live in many different places on Earth
Therefore, the student is able to:
A. Describe how the number of people varies from place to place, as exemplified by being able to
B. Explain why people live in different types of places, as exemplified by being able to
3. People move for a variety of reasons
Therefore, the student is able to:
A. Describe examples of different human migrations, as exemplified by being able to
B. Explain why people move from one place to another, as exemplified by being able to
C. Describe how people and places change as a result of migration, as exemplified by being able to
1. Demographic concepts help explain the structures of populations
Therefore, the student is able to:
A. Describe and explain the demographic concepts of fertility and mortality, crude birth and death rates, natural increase and doubling time, race and ethnicity, as exemplified by being able to
B. Compare the structures of populations in different places through the use of key demographic concepts, as exemplified by being able to
2. The distribution and density of population varies over space and time
Therefore, the student is able to:
A. Explain the concepts of population distribution and density and how they change over time, as exemplified by being able to
B. Analyze and explain the variations of population distribution on national and global scales, as exemplified by being able to
3. There are multiple causes and effects of migration
Therefore, the student is able to:
A. Identify and describe the types of migrations in terms of time, distance, and cause, as exemplified by being able to
C. Describe the consequences of migration for people as well as on the origin and destination places, as exemplified by being able to
1. Culture, economics, and politics influence the changing demographic structure of different populations
Therefore, the student is able to:
A. Explain the demographic history of countries using the demographic transition model, as exemplified by being able to
B. Evaluate the effects of governmental policies on population characteristics, as exemplified by being able to
2. Population distribution and density are a function of historical, environmental, economic, political, and technological factors
Therefore, the student is able to:
A. Identify and explain how historical, environmental, economic, political, and technological factors have influenced the current population distribution, as exemplified by being able to
B. Analyze demographic data and identify trends in the spatial distribution of population, as exemplified by being able to
3. Migration is one of the driving forces for shaping and reshaping the cultural and physical landscape of places and regions
Therefore the student is able to:
A. Compare and explain different examples of migrations in terms of the “laws of migration,” as exemplified by being able to
B. Evaluate and explain the impact of international migration on physical and human systems, as exemplified by being able to
C. Compare and explain the ways in which different groups and governments adjust to the departure and arrival of migrants, as exemplified by being able to