AP Psych Unit 2 Flashcards

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Questions and Answers

Which factor could have caused the population represented by the graph to stabilize at its carrying capacity?

A sudden loss in the food supply

Rapid deforestation

The finite amount of space available in the area (correct)

A disease that swept through the population

What would happen if everyone on the planet used resources and lived the average lifestyle of an American?

There would be the same number of people in less-developed countries as there are Americans.

We would need multiple Earths for this to be possible. (correct)

The Earth would have the carrying capacity to sustain the human population.

The population growth rate would immediately decrease.

What type of distribution does the human population follow on a global level?

Random

Indescribable

Uniform

Clumped (correct)

True or false: A population can be clumped on a large scale, but uniform on a local scale.

True Signup and view all the answers

In a city with 86,293 people, 1,853 citizens died and 1,472 babies were born in one year. What is the current growth rate of the city?

Approximately - 0.4% Signup and view all the answers

How does the population pyramid of India compare to that of the United States?

India has a greater potential for high levels of demographic momentum than does the United States. Signup and view all the answers

True or false: Human population growth has always been exponential.

False Signup and view all the answers

The y-axis to the right represents __________.

the level of excess resources available for population growth Signup and view all the answers

What does the orange graph line represent?

Carrying capacity Signup and view all the answers

Which of the following statements are true of logistic growth? (Select all that apply)

As the population approaches carrying capacity, it grows more slowly. Signup and view all the answers

Which of the following statements are true of a population at carrying capacity? (Select all that apply)

The population growth rate equals zero. Signup and view all the answers

As a population approaches carrying capacity, environmental resistance __________.

Increases Signup and view all the answers

Which of the following factors does not contribute to environmental resistance?

Birth rate Signup and view all the answers

Describe the characteristics of Graph A, B, and C representing different patterns of population growth.

Graph A is an S-shaped curve that reaches a plateau at carrying capacity; Graph B fluctuates near carrying capacity; Graph C drops after exceeding carrying capacity. Signup and view all the answers

Study Notes

Population Dynamics

A population stabilizes at its carrying capacity primarily due to limited available space.
If everyone lived like the average American, multiple Earths would be required to support the population.
Human global population distribution is predominantly clumped.

Population Characteristics

A population can be clumped on a large scale and uniform on a local scale.
In a city with 86,293 residents, a growth rate of approximately 0.4% is calculated when 1,853 die and 1,472 are born in one year.
India exhibits a higher potential for demographic momentum compared to the United States due to its youthful population.

Growth Trends

Human population growth has not always followed an exponential pattern; it is not a constant trajectory.

Logistic Growth

Logistic growth involves the population growing rapidly until reaching the carrying capacity, where growth eventually slows and rates equalize between births and deaths.
When populations reach carrying capacity, growth rates equal zero, and birth and death rates balance.
As the population approaches carrying capacity, environmental resistance increases.

Environmental Resistance

Birth rate does not contribute to environmental resistance; other factors such as weather, food competition, and environmental toxins are significant.

Graph Interpretation

Graph A depicts logistic (S-shaped) growth, while Graph B shows a fluctuating population initially outperforming carrying capacity.
Graph C indicates a rapid increase followed by a dramatic decline in population size.

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Description

Test your knowledge with these flashcards for AP Psychology Unit 2. Review key concepts related to population dynamics and carrying capacity. It's a great way to prepare for exams and reinforce your understanding of environmental psychology.