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Quizzes > Geography

Population quiz questions and answers for World Population Day

Quick, free population quiz to test your knowledge. Instant results.

Editorial: Review CompletedCreated By: Diana ListunovaUpdated Aug 24, 2025
Difficulty: Moderate
2-5mins
Learning OutcomesCheat Sheet
Paper art showing cutout people icons connected by lines over world map on golden yellow background for population quiz.

This population quiz helps you check your grasp of global demographics, from growth and density to migration and age structure. Go deeper with a logistic growth quiz to see how populations change, and try the human development quiz to link data with real lives. You can also explore a population health quiz to view demographics through a public health lens.

What is the approximate current world population as of 2023?
9 billion
7 billion
10 billion
8 billion
The world population crossed the 8 billion mark in November 2022, and as of 2023 remains just above that milestone.
Which country has the largest population?
United States
Indonesia
India
China
China remains the world's most populous country with over 1.4 billion people, narrowly ahead of India.
What does 'population density' measure?
Number of births per year
Average age per unit area
Ratio of urban to rural dwellers
Number of people per unit area
Population density is calculated as the total population divided by the land area, giving an average number of people per unit of space.
Which continent is the least populated?
South America
Antarctica
Europe
Australia
Antarctica has no permanent residents and only a few hundred to a thousand temporary researchers, making it the least populated continent.
What is the term for a bar graph that represents a population's age and sex distribution?
Population pyramid
Life table
Age-sex matrix
Demographic graph
A population pyramid is a graphical illustration that shows the distribution of various age groups in a population, typically separated by sex.
What does the total fertility rate (TFR) measure?
Under-five mortality per year
Average number of children per woman
Population growth rate
Number of births per 1,000 people
Total fertility rate estimates the average number of children a woman would have over her lifetime based on current age-specific fertility rates.
In which year did the UN estimate the world population reached 7 billion?
2015
2005
2011
2000
The United Nations marked the 7-billion milestone on October 31, 2011, when the global population was estimated to have reached that number.
Which country has the highest population density?
Monaco
India
Bangladesh
Japan
Monaco, with an area of just about 2 square kilometers and tens of thousands of residents, leads the world in population density.
According to the Demographic Transition Model, which stage is characterized by both low birth and death rates?
Stage 2
Stage 4
Stage 3
Stage 1
Stage 4 of the Demographic Transition Model features both low birth and low death rates, resulting in a stable population size.
What is the term for the shift of population from rural to urban areas?
Gentrification
Urban sprawl
Suburbanization
Urbanization
Urbanization describes the increasing proportion of people living in urban areas as populations move from rural regions.
Which major factor is most directly responsible for the global decline in death rates since the 20th century?
Increased urbanization
Higher birth rates
Lower fertility rates
Improved healthcare
Advances in medical care, vaccination programs, and sanitation have significantly reduced mortality rates worldwide.
What does carrying capacity refer to in population ecology?
Rate of population growth
Ideal population size
Minimum viable population
Maximum sustainable population
Carrying capacity is the maximum number of individuals an environment can support indefinitely without degrading resources.
How is the net migration rate defined?
Difference between immigrants and emigrants per 1,000 people
Immigrants per 1,000 people
Emigrants per 1,000 people
Total number of migrants
Net migration rate equals the number of immigrants minus the number of emigrants per 1,000 individuals in a population.
Which continent is projected to have the fastest population growth between 2020 and 2050?
North America
Africa
Asia
Europe
Sub-Saharan Africa is expected to grow most rapidly due to high fertility rates and a young age structure.
What is replacement-level fertility in most developed countries?
2.5 children per woman
1.5 children per woman
2.1 children per woman
3.0 children per woman
In developed contexts, a total fertility rate of approximately 2.1 children per woman is needed to replace the population without migration.
Which economist first proposed that population growth tends to outpace resource growth, potentially leading to famine?
Adam Smith
John Stuart Mill
Thomas Malthus
Karl Marx
Thomas Malthus argued in his 1798 essay that population grows exponentially, while food supply increases arithmetically, causing inevitable checks like famine.
In demographic studies, what is the 'demographic dividend'?
Decline in mortality rates
Economic growth potential from a large working-age population
The burden of a high dependent population
A sudden surge in birth rates
A demographic dividend arises when falling fertility increases the proportion of working-age people, potentially boosting economic productivity.
Which measure indicates the median number of years a newborn is expected to live under current mortality rates?
Life expectancy at birth
Infant mortality rate
Crude death rate
Gross reproduction rate
Life expectancy at birth summarizes the average number of years a newborn can expect to live if current age-specific mortality rates remain constant.
What is the main demographic factor contributing to Japan's population decline?
High emigration rates
High mortality rate
Low fertility rate
Widespread disease
Japan's total fertility rate has fallen below replacement level for decades, leading to a shrinking and aging population.
What is the UN's medium variant projection for world population in 2100?
9.7 billion
10.9 billion
12.3 billion
8.5 billion
The UN projects the world population to reach approximately 10.9 billion by 2100 under its medium?variant scenario.
What does the youth dependency ratio measure?
Births per 1,000 people
Persons aged 65+ per 100 persons aged 15 - 64
Total dependents per 100 working-age persons
Persons aged 0 - 14 per 100 persons aged 15 - 64
The youth dependency ratio is the number of individuals aged 0 - 14 per 100 people aged 15 - 64, indicating pressure on the working-age population.
Which of the following was an anti-natalist population policy?
One-Child Policy
Child tax benefits
Paid maternity leave
Pro-family subsidies
China's One-Child Policy limited most families to a single child to curb population growth, exemplifying an anti-natalist measure.
What term describes the evenness of population spread within a specific area?
Urban sprawl
Population density
Spatial distribution
Carrying capacity
Spatial distribution refers to the pattern and evenness of how people are dispersed across a given geographic area.
Which UN World Population Prospects variant assumes the lowest future fertility rates?
Low variant
Medium variant
High variant
Constant variant
The low variant projects fertility rates declining by half a child below the medium variant, producing the lowest population forecast.
What phenomenon does population momentum explain?
Impact of migration on short-term population change
Rapid urbanization driven by youth bulge
Continued population growth after replacement fertility due to age structure
Immediate population stabilization once fertility reaches replacement level
Population momentum is the continued growth that occurs even after fertility declines to replacement level because a large cohort of young people enters reproductive age.
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Study Outcomes

  1. Understand Global Demographics -

    Grasp key concepts and statistics related to world population size, growth rates, and regional distribution.

  2. Recall Population Facts -

    Remember important data points and milestone figures that shape our understanding of global population trends.

  3. Analyze Population Trends -

    Examine factors driving population changes over time and compare demographic shifts across different regions.

  4. Interpret Quiz Results -

    Evaluate your performance to identify strengths and knowledge gaps in population awareness.

  5. Apply Insights to Awareness -

    Use newfound population trivia to foster discussions, support World Population Day initiatives, and enhance your demographic literacy.

Cheat Sheet

  1. Population Growth Rate & Rule of 70 -

    According to the UN Population Division, the growth rate (r) is calculated as (births - deaths) ÷ total population, a key formula for any population quiz questions and answers. To estimate doubling time, apply the Rule of 70: doubling time ≈ 70 ÷ r, which quickly turns complex math into a handy mental shortcut. For instance, at a 1.4% growth rate, a population doubles in about 50 years (70 ÷ 1.4), perfect for mastering global population trivia.

  2. Demographic Transition Model Stages -

    The Demographic Transition Model outlines four stages - from high birth/death rates to low birth/death rates - widely taught in university geography courses (see U.S. Census Bureau). A simple mnemonic like "High to Helped, Industrial to Stable" helps you recall each phase during a world population quiz. Recognizing these stages boosts your performance on any population facts quiz by linking historical trends to stage definitions.

  3. Population Density Calculation -

    Population density = total population ÷ land area, a core concept featured on many population awareness quizzes by the World Bank. Comparing Bangladesh's ~1,265 people/km² vs. Australia's ~3 people/km² makes density differences crystal clear. This formula is not only straightforward but also essential for interpreting global population trivia maps and charts.

  4. Age Structure & Population Pyramids -

    Population pyramids classify age cohorts into expansive, constrictive, or stationary shapes - tools used by the U.S. Census Bureau and UN to analyze demographic trends. Memorize "EXPAND for Youthful, CONTRACT for Aging" to ace questions on population facts quiz about national age profiles. Identifying Japan's constrictive pyramid vs. Nigeria's expansive shape will sharpen your demographic insights.

  5. Carrying Capacity & Logistic Growth -

    Malthusian theory and logistic growth models (dN/dt = rN(1 - N/K)) explain how populations level off when resources run low, a staple in ecological journals and global population trivia. Here, K represents the carrying capacity, and N is current population - understanding this equation will wow in any population quiz questions and answers. Visualizing the S-curve helps you remember resource limits and growth plateaus in nature.

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