AP Human Geography Quiz: Population Dynamics

What this quiz covers

This quiz focuses on Population Dynamics, giving you a quick way to practice the rules, question types, and explanations that matter most for AP Human Geography.

How to use this quiz

Try each quiz question before looking at the correct answer. Use the explanations to review missed ideas, then come back to similar questions until the pattern feels familiar.

Question 1

1. Country A is more likely to experience rapid natural increase, while Country B is more likely to face population aging and potential natural decrease. (correct answer)
2. Both countries are at replacement level because TFR is measured per 1,000 population, not per woman.
3. Country B will grow faster because low TFR is typical of low-income countries with high birth rates.
4. Country A's TFR of 4.2 means 4.2 births per 1,000 people, so its growth will be modest.
5. TFR alone determines total population change, so migration cannot offset Country B's low fertility.

Question 2

1. Country J has NIR of 52 per 1,000 because births and deaths are added
2. Country K has positive natural increase because low birth rates always mean rapid growth in developed countries
3. Country J has positive natural increase (24 per 1,000), while Country K has slightly negative natural increase (-1 per 1,000) (correct answer)
4. Both countries must have the same natural increase because crude rates cannot be compared across places
5. Country K's natural increase is zero because migration offsets deaths

Question 3

1. Stage 1: both CBR and CDR are high and fluctuating
2. Stage 2: CBR remains high while CDR drops sharply
3. Stage 3/4: CBR has declined substantially and CDR is low, indicating slower natural increase (correct answer)
4. Stage 5: CBR must be higher than CDR because medical care reduces deaths
5. Stage 2: CDR is high because industrialization increases pollution deaths

Question 4

1. 4 per 1,000; CBR and TFR are not interchangeable—TFR is lifetime births per woman (correct answer)
2. 24 per 1,000; natural increase is calculated by adding CBR and CDR
3. 4%; CBR and CDR are percentages, so subtracting yields percent growth
4. 10 per 1,000; the death rate alone determines natural increase in developed countries
5. 0 per 1,000; migration must be included to compute natural increase

Question 5

1. 12%
2. 1.2% (correct answer)
3. 24%
4. 0.6%
5. 6%

Question 6

1. A larger share of the population in older age cohorts over time (correct answer)
2. An immediate increase in crude birth rate because people live longer
3. No change in age structure because life expectancy does not affect population composition
4. Population growth depends only on births and deaths, so migration cannot alter the trend
5. A doubling time that must be shorter because life expectancy increased

Question 7

1. Lydora's NIR in 2020 is $18-8=10$ per 1,000 (about 1.0%), meaning the population would grow naturally if migration were zero. (correct answer)
2. Lydora's NIR in 2020 equals the population growth rate because migration is always included in NIR.
3. Because Lydora's CBR is below 20, it must have a negative NIR typical of highly developed countries.
4. Lydora's NIR cannot be estimated without knowing net migration, since migration determines natural increase.
5. Lydora's NIR in 2020 is $8-18=-10$ per 1,000 because deaths are subtracted from births.

Question 8

1. 40 per 100 working-age people
2. 67 per 100 working-age people (correct answer)
3. 60 per 100 working-age people
4. 25 per 100 working-age people

Question 9

1. Large childbearing-age cohorts (correct answer)
2. Life expectancy is rising fast
3. Net migration is positive
4. Fertility is above replacement

Question 10

1. Bulging middle, broad top
2. Skewed toward older males
3. Roughly equal age cohorts
4. Broad base, narrowing top (correct answer)

Question 11

1. 3.0%
2. 1.5%
3. 2.5% (correct answer)
4. 0.5%

Question 12

1. Steadily rising birth rates
2. More land under cultivation
3. Higher crop yields per acre (correct answer)
4. Longer life expectancies

Question 13

1. It means 2.1 babies are born per 1,000 people each year, so Norvia's population will decline immediately.
2. It suggests Norvia is near replacement-level fertility, though population momentum could still affect growth. (correct answer)
3. It proves Norvia has a very high infant mortality rate, which forces families to have more children.
4. It cannot be interpreted without net migration because TFR includes migration flows.
5. It means the crude death rate is 2.1 per 1,000, indicating an extremely young population.

Question 14

1. CBR 14, CDR 10, and net migration of -8 per 1,000, producing overall decline despite natural increase. (correct answer)
2. CBR 10, CDR 14, and net migration of +8 per 1,000, producing overall decline despite natural increase.
3. CBR 14, CDR 10, and net migration of +8 per 1,000, producing overall decline despite natural increase.
4. CBR 14, CDR 10, and net migration of 0 per 1,000, producing overall decline despite natural increase.
5. CBR 10, CDR 14, and net migration of -8 per 1,000, producing overall decline because births exceed deaths.

Question 15

1. A rapid IMR decline can occur through health interventions and may precede major declines in fertility. (correct answer)
2. A low IMR necessarily means a high crude death rate because more infants survive to old age.
3. IMR is primarily determined by net migration of infants, so health interventions have little effect.
4. IMR is measured as deaths under age 1 per 1,000 total population, so it is unrelated to births.
5. If IMR falls from 30 to 15, it means the number of births doubled because $15$ is half of $30$.

Question 16

1. The decline in IMR suggests improving health conditions and often contributes to rising life expectancy. (correct answer)
2. The decline in IMR means the crude death rate must have increased because more infants are counted.
3. An IMR of 18 per 1,000 is typical only of the least developed countries.
4. IMR changes do not affect population dynamics because they ignore migration.
5. IMR fell by 42% because it dropped from 60 to 18.

Question 17

1. Both countries have identical PGR because PGR depends only on CBR and CDR.
2. Country C likely has a higher PGR than its RNI, while Country D likely has a lower PGR than its RNI. (correct answer)
3. Country C must be less developed than Country D because in-migration raises birth rates directly.
4. Country D's RNI is negative because out-migration reduces natural increase.
5. Their RNI is found by adding net migration to CBR and subtracting CDR.

Question 18

1. Natural increase is $-2\permil$, but population growth is about $+5\permil$ when migration is included. (correct answer)
2. Natural increase is $+5\permil$ because net migration is added to births minus deaths.
3. Overall population must be shrinking because the crude death rate exceeds the crude birth rate.
4. Natural increase is $\frac{9}{11}=-2\%$, so the population will halve quickly.
5. Population growth cannot be determined unless the total fertility rate is provided.

Question 19

1. From a high-growth phase toward a later stage with lower growth, as both CBR and CDR declined substantially. (correct answer)
2. From Stage 4 to Stage 2, because birth rates fell and death rates fell.
3. No stage change is implied; CBR and CDR are the same as TFR and IMR.
4. The country must be in Stage 1 in 2025 because the CDR is low.
5. Stage cannot be inferred without net migration, because migration defines the demographic transition stages.

Question 20

1. A higher crude birth rate, because more births increase the average age
2. Lower mortality rates across the population, especially at younger ages (correct answer)
3. Net in-migration of older adults, raising the average years lived
4. A total fertility rate of exactly 2.1, which mathematically forces life expectancy upward
5. An increase in infant mortality, which raises the statistical average by removing infants