Population Pyramids: Comparing, Predicting and Solving Population Problems

A complete set of practice flashcards in Question and Answer format covering population pyramid structure, analysis, future predictions, and government policy interventions.

What is a population pyramid?

A graph that shows the structure of a population according to age, sex, and population size or percentage.

How are age, sex, and population size represented on a population pyramid?

Age is shown from youngest at the bottom to oldest at the top, sex is divided into males on the left and females on the right, and population size or percentage is shown along the horizontal axis as horizontal bars.

What does a wide bottom on a population pyramid indicate?

A high birth rate and a young population.

What does a narrow bottom on a population pyramid indicate?

A lower birth rate and fewer children.

What does a wide middle section on a population pyramid indicate?

A large working-age population.

What does a wide top on a population pyramid indicate?

A larger elderly population and longer life expectancy.

What does a rectangular overall shape on a population pyramid indicate?

The population is becoming older and more stable.

When comparing two population pyramids from different years, what primary approach should be taken?

Instead of describing each pyramid separately, you should identify what has changed between the two years.

What change at the base of a population pyramid suggests a falling birth rate?

The base of the pyramid becoming narrower over time.

What are the potential economic benefits of a large working-age population?

It can provide more workers, more taxpayers, and greater economic productivity.

What three demographic trends are suggested by a population pyramid becoming wider at the top?

Higher life expectancy, an ageing population, and better healthcare and living conditions.

What is the dependency ratio, and what are its two major dependent groups?

The dependency ratio measures the number of people who depend on the working-age population. The two major dependent groups are young dependants (children) and old dependants (elderly people).

What systems and public services can experience pressure from a high dependency ratio?

Healthcare, schools, pensions, government spending, and working-age taxpayers.

Why do population pyramids often show more women than men in older age groups?

Because women often have a higher life expectancy than men.

What are the three steps for making a population prediction for 2050 using population pyramids?

Step 1: Identify the current trend; Step 2: Continue the trend; Step 3: Predict the consequences.

What combined trend occurs when a falling birth rate is paired with an increasing life expectancy?

It produces fewer young people and more elderly people, leading to an ageing population and a higher dependency ratio.

How does an ageing population affect a country's workforce and economic growth?

It leads to a smaller workforce, potential labour shortages, lower economic growth, and greater pressure on taxpayers.

What government policy interventions can address a birth rate that is too low?

Child benefits, tax benefits for families, housing support, paid parental leave, affordable childcare, and free or subsidised healthcare.

What government interventions can be used when a population is ageing too quickly?

Encourage immigration of working-age people, increase the retirement age, encourage older people to remain in employment, increase female participation in the workforce, invest in technology and automation, and introduce policies encouraging higher birth rates.

What government interventions can help gradually reduce a birth rate that is too high?

Improve access to education (particularly for girls), improve access to reproductive healthcare and family planning, increase employment opportunities for women, improve access to healthcare and social services, and provide information about family planning.

What seven areas can come under pressure from a rapidly growing population?

Schools, hospitals, housing, food supplies, water, jobs, and infrastructure.

What is the complete chain of consequences that begins with a low birth rate?

Low birth rate leads to fewer children, which leads to a smaller future working-age population, fewer workers paying taxes, greater pressure on pensions and government spending, and potential government action such as increasing the retirement age or encouraging immigration.

In the S-C-P-I method for analyzing population pyramids, what does each letter stand for?

S = Spot the change; C = Cause; P = Predict; I = Intervention.