Population Pyramid – AP Human Geography | ShowMeClass

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Population Pyramid

AP Human Geography · Unit 2: Population & Migration

Learning Objectives

Interpret age-sex population pyramids

Compare pyramids across DTM stages

Identify expansive, stationary, and constrictive shapes

Analyze dependency ratios and median age

Pyramid Shapes

Expansive ▲ — Wide base, rapid growth (Stage 2)

Stationary ▬ — Even sides, slow growth (Stage 3-4)

Constrictive ▽ — Narrow base, declining (Stage 5)

Legend

Male population

Female population

Comparison overlay

PopulationDemographicsDTMAge Structure

Country:Nigeria

Population:—

Shape:Expansive

Total Pop

—

Median Age

—

Growth Rate

—

Dependency

—

DTM Stage

—

Country

Compare With

Projection Year

Analysis

Quick Quiz▼

1. A wide-base pyramid indicates:

Low birth rate High birth rate, rapid growth Aging population Negative growth

2. Japan's pyramid shape is best described as:

Expansive Stationary Constrictive Columnar

3. Dependency ratio measures:

Birth rate vs death rate Non-working vs working-age pop Urban vs rural population Male vs female ratio