AP Environmental Science Flashcards: Human Population Dynamics

What this deck covers

This deck focuses on Human Population Dynamics, giving you a quick way to review the definitions, rules, and examples that matter most for AP Environmental Science.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Flashcard 1: What is 'total fertility rate' (TFR)?

Answer: The average number of children a woman will have in her lifetime. Key indicator of reproductive patterns and demographics.

Flashcard 2: Identify one impact of high population density.

Answer: Increased competition for resources. Limited space intensifies competition for basic needs.

Flashcard 3: What is the definition of 'population density'?

Answer: Number of individuals per unit area or volume. Measures crowding and resource competition intensity.

Flashcard 4: What does a 'column-shaped' age structure indicate?

Answer: Stable population. Equal birth and death rates maintain constant size.

Flashcard 5: What is the current estimated world population (2023)?

Answer: Approximately 8 billion. Reached this milestone in late 2022.

Flashcard 6: What is the current estimated world population (2023)?

Answer: Approximately 8 billion. Reached this milestone in late 2022.

Flashcard 7: State the formula for crude death rate (CDR).

Answer: CDR = (Number of Deaths / Total Population) × 1,000. Standard formula for measuring deaths per population.

Flashcard 8: State the formula for crude birth rate (CBR).

Answer: CBR = (Number of Births / Total Population) × 1,000. Standard formula for measuring births per population.

Flashcard 9: Find the doubling time for a population with a 2% growth rate.

Answer: 35 years. Using Rule of 70: $70 ÷ 2\% = 35$ years.

Flashcard 10: How does emigration affect population size?

Answer: Decreases population size. Removes individuals from the existing population.

Flashcard 11: What is the definition of carrying capacity?

Answer: The maximum population size an environment can sustain indefinitely. Determined by available resources and environmental limits.

Flashcard 12: Calculate the crude death rate: Deaths=30, Population=3000.

Answer: 10 deaths per 1,000 individuals. $(30 ÷ 3000) × 1000 = 10$ per 1,000.

Flashcard 13: How does immigration affect population size?

Answer: Increases population size. Adds individuals to the existing population.

Flashcard 14: What does the term 'demographic transition' describe?

Answer: The shift from high birth and death rates to low birth and death rates. Occurs as societies develop economically and socially.

Flashcard 15: Identify the formula for population growth rate.

Answer: Population Growth Rate = (Births - Deaths) / Total Population × 100. Net change expressed as percentage of total population.

Flashcard 16: Identify one characteristic of a post-industrial society.

Answer: Low birth and death rates. Indicates completed demographic transition stage.

Flashcard 17: What is the definition of 'population density'?

Answer: Number of individuals per unit area or volume. Measures crowding and resource competition intensity.

Flashcard 18: What is 'total fertility rate' (TFR)?

Answer: The average number of children a woman will have in her lifetime. Key indicator of reproductive patterns and demographics.

Flashcard 19: Find the birth rate: Births=20, Population=1000.

Answer: 20 births per 1,000 individuals. $20 ÷ 1000 × 1000 = 20$ per 1,000.

Flashcard 20: What is the significance of a high infant mortality rate?

Answer: Indicator of poor health conditions. Reflects inadequate prenatal and infant healthcare systems.

Flashcard 21: Which option describes 'age structure diagram'?

Answer: A graphical illustration of the age distribution within a population. Shows population structure by age and gender groups.

Flashcard 22: How are birth and death rates expressed?

Answer: Per 1,000 individuals per year. Standard demographic measurement for comparison purposes.

Flashcard 23: What is the definition of 'replacement-level fertility'?

Answer: The average number of children a couple must have to replace themselves. Maintains stable population size over generations.

Flashcard 24: What is the replacement-level fertility rate in developed countries?

Answer: Approximately 2.1. Accounts for infant mortality and demographic factors.

Flashcard 25: Identify one environmental impact of urbanization.

Answer: Loss of natural habitats. City expansion destroys ecosystems and wildlife areas.

Flashcard 26: What is a common cause of urban sprawl?

Answer: Increased automobile use. Car-dependent development spreads cities outward unnecessarily.

Flashcard 27: What is the definition of 'urban sprawl'?

Answer: The uncontrolled expansion of urban areas. Low-density development consumes excessive land resources.

Flashcard 28: Identify an example of a density-independent factor.

Answer: Natural disasters. Affects populations regardless of their density levels.

Flashcard 29: What is one effect of reduced fertility rates?

Answer: Population aging. Fewer births create disproportionately older population structure.

Flashcard 30: Identify one impact of high population density.

Answer: Increased competition for resources. Limited space intensifies competition for basic needs.