Questions and Answers
What is Population Density defined as?
What is the formula for Birth Rate as a %?
(total births ÷ total population) ×100
What does the Birth Rate per 1,000 represent?
(total births ÷ total population) ×1,000
What is the Death Rate as a % formula?
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How is the Death Rate per 1,000 calculated?
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What does Crude Birth Rate refer to?
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What is the formula for Crude Death Rate?
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How is the Population Growth Rate calculated?
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What does Population Change indicate?
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What is the formula for Doubling Time?
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How is the Rate of Change defined?
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What does Percent Change measure?
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What is the Natural Rate of Population Increase?
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Study Notes
Population Density
- Calculated by dividing total population by total area.
Birth Rate as a Percentage
- Represents the proportion of births relative to total population.
- Formula: (total births ÷ total population) × 100.
Birth Rate per 1,000
- Indicates the number of births per 1,000 individuals in the population.
- Formula: (total births ÷ total population) × 1,000.
Death Rate as a Percentage
- Represents the proportion of deaths relative to total population.
- Formula: (total deaths ÷ total population) × 100.
Death Rate per 1,000
- Indicates the number of deaths per 1,000 individuals in the population.
- Formula: (total deaths ÷ total population) × 1,000.
Crude Birth Rate
- Measures the number of births in a population.
- Formula: (total # births ÷ total population) × 1,000.
Crude Death Rate
- Measures the number of deaths in a population.
- Formula: (total # deaths ÷ total population) × 1,000.
Population Growth Rate
- Represents the overall change in population size due to births, deaths, and migration.
- Formula: ((births + immigration) - (deaths + emigration) ÷ total population) × 100.
Population Change
- Measures the variation in population over time.
- Formula: (births + immigration) - (deaths + emigration) ÷ total population.
Doubling Time
- Estimates the time required for a population to double in size.
- Formula: 70 ÷ % growth rate = years to double.
Rate of Change
- Measures the change over time relative to the old value.
- Formula: (new - old) ÷ old.
Percent Change
- Expresses the change as a percentage of the old value.
- Formula: ((new - old) ÷ old) × 100.
Natural Rate of Population Increase
- The difference between total births and total deaths in a population.
- Indicates the growth potential without migration factors.
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Test your knowledge of key population equations with these flashcards designed for the AP Environmental Science curriculum. Each card covers essential definitions and calculations related to population density, birth rates, and death rates. Perfect for mastering the concepts needed for your AP exam.
