What are some factors that could change the shape of your pyramid?
Industrialization, baby boom, infant mortality
, birth control, government control of population numbers, etc., could all change the shape of the pyramid.
What are three factors that could change the shape of your pyramid?
Economic variations
(such as a depression or job growth), political changes (such as a new policy on family planning or a new tax break on dependents), conflicts (such as wars), public health trends and natural events (such as long-term droughts or an earthquake) can impact birth and/or death rates.
What is the shape of declining pyramid?
It represents a young or rapidly growing population in
an urn-shaped age pyramid
. The number of reproductive individuals is higher than the number of pre-reproductive individuals, it literally represents a declining or diminishing population.
What two factors explain why a demographic profile would be narrow at the top wide at the bottom and shaped like a pyramid?
Two factors are responsible for the pyramid shape in 1950:
An increasing number of births broadened the base layer of the population pyramid and a continuously high risk of death throughout life is evident
by the pyramid narrowing towards the top. There were many newborns relative to the number of people at older ages.
What are some factors that could change the shape of a population pyramid?
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.
Which are three main factors that cause population change?
- Births – usually measured using the birth rate (number of live births per 1,000 of the population per year).
- Deaths – usually measured using the death rate (number of deaths per 1,000 of the population per year).
- Migration – the movement of people in and out of an area.
What are the 5 stages of population pyramid?
There are five stages of population pyramids:
high fluctuating, early expanding, late expanding, low fluctuating, and natural decrease
.
Can you tell from the population pyramids which country has the most people?
From the Total line on Student Worksheet #1, you can tell that
China
has more people than any other country. 6. Of the six graphs, which look most like pyramids?
What does a good population pyramid look like?
They are characterized by their
rectangular shape
, displaying somewhat equal percentages across age cohorts that taper off toward the top. These pyramids are often characteristic of developed nations, where birth rates are low and overall quality of life is high.
What can population pyramids tell us?
A population pyramid can be used
to compare differences between male and female populations of an area
. They also show the number of dependents (children and, sometimes, elderly people) and general structure of the population at any given moment.
What is the difference between pyramid shaped and bell shaped age structure?
Triangular age pyramid has high proportion of pre- reproductive individuals, moderate number of reproductive individuals and fewer post-reproductive individuals. It represents young or rapidly growing population. In bell-shaped age pyramid,
the number of pre-reproductive and reproductive individuals is almost equal
.
What is the shape of declining population?
Urn shaped
population age pyramid represents declining population.
What is a population pyramid diagram?
A population pyramid or “age-sex pyramid” is
a graphical illustration of the distribution of a population (typically that of a country or region of the world)
by age groups and sex; it typically forms the shape of a pyramid when the population is growing.
What is age pyramid and types?
There are three types of population pyramids:
Expansive, Constrictive, and Stationary
. (1) Expansive population pyramids depict populations that have a larger percentage of people in younger age groups. Populations with this shape usually have high fertility rates with lower life expectancies.
What factors affect age structure?
Age distributions have also been influenced in varying ways by
migrations, war losses, and differences in mortality
—though these effects are generally less important than the influence of variations in fertility.
What are the three types of population?
Individuals of a population can be distributed in one of three basic patterns:
uniform, random, or clumped
.
