The age structure of a population affects a nation's key socioeconomic issues. Which age structure diagram (below) indicates a population that has not yet undergone demographic transition and industrialization? The number of Males to Females. Q. b) c) d) Male Female Male Female Male Female Male Female Ob оа Od . When you are interpreting age-structure diagrams, it is important to compare the width of the base to the rest of the population. A Population pyramid (also called "Age-Sex Pyramid") is a graphical representation of the age and sex of a population. a high birth rate and a rapidly growing population. We want to hear from you.One of the tools that demographers use to understand populations is the By looking closely at the age structure diagram, one will notice slightly more boys in the younger age groups than girls; however, the ratio tends to reverse in the upper age groups, when females tend to outnumber males. If the base is very wide compared to the upper parts of the diagram, then this indicates a lot of young people (pre-reproductive) in the population compared to older generations i.e. As a side note, a similar kind of age structure to Christian County’s is seen often, but in a very different kind of place. When you are interpreting age-structure diagrams, it is important to compare the width of the base to the rest of the population.
They can be stable, meaning that patterns of birth and death are unchanging over time; stationary, which signals both low birth and death rates (they slope gently inward and have a rounded top); expansive, which slope dramatically inward and upward from the base, indicate that a population has both high birth and death rates; or constrictive, which signal low birth and death rates, and expand outward from the base before sloping inward to achieve a rounded peak at the top.All pictures posted are the teaching resources for age structure or population pyramid that you can freely download. answer choices . Age Structure Diagrams. Age Structure Diagrams - Displaying top 8 worksheets found for this concept.. The age structure diagram above shows a diagram in which the ages and sexes for the China population are arranged so that ages are grouped together such as 0 – 4 years, 5 – 9 years, and so on.The population of each is group is represented as a bar extending from a central vertical line, with the length of each bar dependent upon the population total for that particular group. Find other interesting diagrams resources in our catalogue at the side of the web!Our website uses cookies and similar technologies, including for personalization, advertising and analytics purposes as descibed in our Privacy Policy. (Students may estimate the total population in 1900 and 2020 by adding up the numbers in each age group. This population has low birth rates and is shrinking. Age structure is the proportion of a population in different age classes. The age-structure pyramid shows that the Michigan population has increased a great deal from 1900. Information is included by sex and age group as follows: 0-14 years (children), 15-24 years (early working age), 25-54 years (prime working age), 55-64 years (mature working age), 65 years and over (elderly). [ "article:topic", "license:ccbyncsa", "showtoc:no", "authorname:czehnder", "source-chem-140208" ][ "article:topic", "license:ccbyncsa", "showtoc:no", "authorname:czehnder", "source-chem-140208" ] Types: Expansive - pyramid with a wide base (larger percentage of people in younger age groups, indicating high birth rates and high fertility rates) … If the base is smaller than the upper parts of the diagram, then this indicates few young people in the population compared to older generations (post-reproductive). reproductive (15 – 49 years) Tags: Question 19 . Adopted or used LibreTexts for your course? This area has a large percentage of. Models that incorporate age structure allow better prediction of population growth, plus the ability to associate this growth with the level of economic development in a region. An age structure diagram looks like an upside-down triangle. Both age structure and age pyramids can take a variety of forms, depending on the birth and death trends within the population, as well as a host of other social factors. Population pyramid, graphical representation of the age and sex composition of a specific population.The age and sex structure of the population determines the ultimate shape of a population pyramid, such that the representation may take the form of a pyramid, have a columnar shape (with vertical sides rather than sloped sides), or have an irregular profile. 30 seconds . In 1900 a rough estimate is 2,400,000; in 2020 a rough estimate is 10,000,000.) A common distribution often used with this type of visualization is female and male populations by age. The age structure of a population is an important factor in population dynamics. SURVEY .
Get 1:1 help now from expert Earth Sciences tutors Many countries have a female majority as a result of the longer life expectancy for females.An age-structure diagram provides a snapshot of the current population and can represent information about the past and give potential clues about future problems. Specifically, while the 18-to 24-year old and 65-and-older age groups increased slightly in the last year, this increase was offset by the loss of people ages 25 to 64 and children under the age of 18.
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