Social Studies

Environmental Determinism

The belief that the physical environment determines or shapes human society.

Example: A society in a cold region must adapt its clothing, housing, and lifestyle to survive.

Possibilism

The belief that humans can overcome environmental limitations through technology, innovation, and decision-making.

Example: The Netherlands built dikes and drainage systems to reclaim land from the sea.

Weather

Short-term atmospheric conditions

Example: It is raining tomorrow

Climate

Long-term patterns of weather in a region

Example: It is dry in this region

Renewable Resources

Resources that naturally replenish over time

Examples: Solar energy, wind energy, hydroelectric power, forests

Nonrenewable Resources

Resources that have finite amounts or take extremely long periods to form

Examples: Coal, petroleum, natural gas, metals

Resource Distribution

Natural resources are not evenly distributed across the planet. This influences trade, economic development, political relationships, and conflict.

Example: Saudi Arabia has a lot of oil

Resource Curse

Countries with abundant natural resources experience issues due to corruption, overdependence on one export, political instability, unequal distribution of wealth, etc.

Example: Venezuela

Deforestation

Large-scale removal of forests

Example: Brazil

Desertification

Degradation of fertile land into increasingly dry, desert-like conditions

Example: West Africa

Urbanization

Growth in the proportion of people living in urban areas

Example: New York City

Urban Sprawl

Uncontrolled or low-density outward expansion of cities

Example: New Delhi

Land Reclamation

Creating usable land from water or otherwise unsuitable terrain

Example: Netherlands

Irrigation

Artificially supplying water to agricultural

Example: Ancient Mesopotamia

Sustainability

Using resources in ways that preserve their availability to future generations

Example: Limits on pollution

Tragedy of the Commons

Individuals acting in their own self-interest overuse a shared resource, harming everyone

Example: Newfoundland fisheries

Adaptation

Adjusting human behavior to the environment

Example: Pueblo civilization

Modification

Changing the environment to meet human needs

Example: Hoover Dam

Population Distribution

How people are spread unevenly across Earth’s surface

Example: Some regions like China have more people than other regions like the Sahara Desert

Population Density

The number of people living in a particular area

Example: Southeast Asia is more dense than Australia

Arithmetic Density

Total population divided by total land area

Example: # of people / km²

Physiological Density

Total population divided arable (farmable) land.

Example: # of people / km² of arable land

Agricultural Density

Number of farmers divided by amount of arable land

Example: # of farmers / km² of arable land

Physical factors that affect population distribution

Climate, water access, terrain, soil, natural resources

Example: Regions like Europe are more populated than Antarctica

Human factors that affect population distribution

Employment opportunities, political stability, transportation infrastructure, education and healthcare, government policies.

Example: Urbanization

Birth Rate

Number of live births per 1,000 people per year

Death Rate

Number of deaths per 1,000 people per year

Immigration

People entering a country

Emigration

People leaving a country

Natural Increase Rate (NIR)

Measures population growth excluding migration

NIR = CBR (Crude Birth Rate) - CDR (Crude Death Rate)

Usually converted into a percentage by dividing by ten

Overall Population Change

Population Change = (Births - Deaths) + (Immigration - Migration)

Doubling Time

An estimation of how long it takes a population to double

70 / Annual Growth Rate

Demographic Transition Model (DTM)

Explains how birth rates, death rates, and population change as a result of a country’s development in five stages

Stage 1 of DTM

High Stationary

High birth and death rates, low growth.

Example: Pre-industrial societies; none today

Stage 2 of DTM

Early Expanding

High birth rates, low death rates, rapid population increase

Example: Niger

Stage 3 of DTM

Late Expanding

Birth rates begin declining, death rates remain low, steady growth

Example: India

Stage 4 of DTM

Low Stationary

Birth and death rates are low, stable population

Example: United States

Stage 5 of DTM

Declining

Birth rates fall below replacement levels, death rates may be higher. Population shrinks.

Example: Japan

Replacement Level Fertility

Average number of children per women necessary to sustain a stable population assuming no migration

Example: In many developed countries, it’s 2.1

Population Pyramids

Visual model to represent a population’s age and sex structure

Expansive Population Pyramid

Wide base, large percentage of young people, high birth rates, rapid population growth

Example: Niger

Stationary Population Pyramid

Relatively even distribution across young and middle-age groups, stable population

Example: United States

Constrictive Population Pyramid

Narrow base, smaller young population, aging population

Example: Japan

Migration

Movement of people

Internal Migration

Movement within the same country

Example: Moving from Los Angeles to New York

International migration

Movement across national borders

Example: Moving from the United States to Canada

Rural-to-Urban Migration

Movement from the countryside to cities

Example: Moving from farmlands to Los Angeles

Voluntary Migration

Movement by personal choice

Example: Immigrating to Europe for job opportunities

Forced Migration

Movement due to circumstances such as conflict or persecution

Examples: Refugees fleeing Ukraine

Push Factors

Conditions that encourage people to leave a location

Examples: War, persecution, unemployment, natural disasters, famine, discrimination

Pull Factors

Conditions that attract people to a location

Examples: employment, wages, liberty, education, family, safety

Refugee

Someone who has fled their country because of persecution, conflict, violence, or other serious threats.

Asylum Seeker

Someone seeking international protection whose claim has not yet been decided.

Chain Migration

When migrants follow family members, friends, or other people from their community who have already relocated.

Example: A family moves from Mexico to America, and other relatives soon join them

Step Migration

Migration that occurs through a series of smaller moves rather than one large journey.

Example: A migrant moves to a small village, then a town, then a city

Ravenstein’s Laws of Migration

Eleven laws made by a geographer in the 1880s to explain why/how people migrate.

Big Ideas: Most migrants travel short distances, those who do travel longer go to big cities, migration happens in steps, migration creates counter-migration, etc

Brain Drain

The emigration of highly educated or skilled workers from a country.

Example: Doctors leave one country and go to another for better pay and opportunities

Remittances

Money migrants send back to their families or communities in their country of origin.

Cultural Diffusion

Migration spreads ideas, languages, religions, foods, traditions, and customs.

Example: Italian food in America

Malthusian Theory

A theory stating that since population grows exponentially and food grows arithmetically, food supplies will eventually run out and a population collapse will take place.

Criticism: New innovations in agriculture prevented such a collapse, and food production has gone much faster than expected.

Carrying Capacity

The maximum population an environment can sustainably support given its available resources and technology.

Dependency Ratio

The ratio of dependents (typically children and older adults) to the working-age population.

Total Fertility Rate (TFR)

The average number of children a woman is expected to have during her reproductive lifetime, based on current age-specific fertility rates.

Epidemiological Transition Model (ETM)

Explains how the leading causes of death change as societies develop. Generally, developed societies experience more deaths from infectious diseases, famine, and poor sanitation, while more developed societies experience proportionally more deaths from chronic diseases such as cancer and heart disease.

Pronatalist Policy

Encourage people to have more children.

Example: Italy

Antinatalist Policy

Discourage people from having more children.

Example: China during the “One Child” era

Intervening Opportunity

When a migrant encounters an appealing opportunity before reaching their originally intended destination.

Example: If a migrant moving to New York finds a job in Chicago and moves there instead

Culture

The shared way of life of a group of people

Includes: beliefs, values, language, religion, customs, food, clothing, music, art, social behavior, etc

Material Culture

Physical things a society creates or uses

Examples: clothing, buildings, tools, food, artwork, technology

Nonmaterial Culture

Ideas and beliefs shared by a society.

Examples: Language, religion, values, traditions, laws, social norms.

Folk Culture

Smaller-scale, traditional, and tied to local communities

Example: Amish people

Popular Culture

Widespread, rapidly changing, and often spread through mass media and the internet.

Example: Memes

Cultural Trait

One individual feature of culture

Examples: Language, food, greeting.

Cultural Complex

A group of related cultural traits.

Example: Traditional Japanese tea party

Cultural Hearth

A place where a cultural trait or cultural system originates and spreads from.

Example: Israel and Judaism

Cultural Region

An area where people share one or more cultural characteristics.

Example: Latin America

Cultural Landscape

The visible imprint of human culture on the environment.

Examines: Architecture, religious buildings, street layouts, monuments, farms, and place names.

Relocation Diffusion

People move and bring their culture with them. Example: Mexican immigrants to America bring part of their culture, like food and music

Expansion Diffusion

A cultural idea spreads outward while remaining strong in its original location.

Example: McDonalds opening in other countries

Contagious Diffusion

Spreads rapidly through direct contact, like a viral trend.

Example: 67

Hierarchal Diffusion

Spreads from influential people or major cities to others.

Example: A TikTok dance spreading from celebrities to their fans

Stimulus Diffusion

The core idea spreads, but people adapt it to fit local culture.

Example: Christianity in Africa and the Americas

Formal Region

An area with one or more clearly shared characteristics.

Example: a region where most people speak Spanish.

Functional Region

An area organized around a central point or node.

Example: A metropolitan area around a big city like New York

Vernacular Region

An area people recognize based on perception or identity, with fuzzy boundaries.

Example: “the American South.”

Language Family

A group of languages descended from a common ancestral language.

Examples: Indo-European (English, Spanish, Hindi, Russian, etc), Sino-Tibetan (Mandarin and others), Afro-Asiatic (Arab, Hebrew, etc), Niger-Congo (Swahili, Yoruba, etc)

Language Branch

A subdivision within a language family.

Examples: Romance, Germanic, Slavic, etc

Dialect

A regional or social variation of a language, often involving pronunciation, vocabulary, or grammar.

Example: Cockney

Isogloss

A boundary marking where a particular linguistic feature changes.

Example: Soda vs Pop

Lingua Franca

A common language used by people who speak different native languages.

Example: English in business

Official Language

A language adopted by a government for official use.

Example: French in France

Toponym

A place name that can reveal cultural or historical influences.

Example: Salt Lake City

Pidgin

A simplified contact language develops between two groups without a shared language—does not traditionally being as the native language of a community.

Example: Hawaiian pidgin.

Creole

A language that develops from a contact languge and becomes the first language of a community, gaining a fuller linguistic structure.

Example: Haitian Creole (blend of French and African languages)

Universalizing Religion

A religion that seeks converts and aim to spread beyond a specific ethnic group

Examples: Christianity, Islam, Buddhism, Sikhism

Ethnic Religion

Religions closely associated with a particular ethnic gruop, region, or heritage.

Examples: Hinduism, Judaism, Shinto

Acculturation

A group adopts some traits from another culture but maintains much of its own.

Example: An immigrant family learns the language of their new country but continues speaking their original language.

Assimilation

A group becomes more culturally similar to the dominant culture, potentially losing distinct traits.

Example: When many of the Muslims and Jews of Spain switched to Catholicism during the Spanish Inquisition.

Syncretism

Different cultural or religious traditions blend into something new.

Example: Mestizo culture in Latin America—a blend of indigenous and European cultures.

Cultural Appropriation

Elements of one culture are adopted by another, sometimes without understanding, permission, or respect for their original significance.

Example: White people having dreads