3.6 Age Structure Diagrams

• What is another name for age structure diagrams?

  Population pyramids
• The pre-reproductive age group includes individuals aged 0 to 14
• A wide base in an age structure diagram indicates rapid population growth.
• Match the shape of the age structure diagram with its demographic implication:

  Wide Base ↔️ Rapid population growth

  Equal Distribution ↔️ Steady population growth

  Narrow Base ↔️ Declining population growth
• What are the three age groups categorized in age structure diagrams?

  Pre-reproductive, reproductive, post-reproductive
• Order the following age cohorts by their birth years, from earliest to latest:

  1️⃣ Baby Boomers (1946-1964)

  2️⃣ Generation X (1965-1980)

  3️⃣ Millennials (1981-1996)

  4️⃣ Generation Z (1997-2012)
• Baby Boomers experienced post-World War II economic prosperity.
• Age structure diagrams have three primary shapes: wide base, equal distribution, and narrow base.
• What type of growth occurs when resources are unlimited?

  Exponential growth
• Logistic growth slows down as the population approaches its carrying capacity.
• Higher birth rates increase population size.
• Which country's age structure diagram suggests a declining population?

  Japan
• Kenya's age structure diagram indicates a need to address challenges of a growing young population.
• Why are age structure diagrams useful in environmental planning?

  To understand population trends
• A narrow base age structure requires strategies focused on healthcare for the elderly.