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GeographyMedium

The United Nations observed the Day of Eight Billion, marking the world population reaching eight billion, on

  1. A.11 July 1987
  2. B.12 October 1999
  3. C.31 October 2011
  4. D.15 November 2022

Correct answer

D. 15 November 2022

Explanation

The correct answer is D, 15 November 2022. The United Nations marked 15 November 2022 as the Day of Eight Billion, the date on which the world population was estimated to have reached eight thousand million. Option A is wrong because 11 July 1987 was the Day of Five Billion, and that date is now observed every year as World Population Day. Option B is wrong because 12 October 1999 was marked as the Day of Six Billion. Option C is wrong because 31 October 2011 was marked as the Day of Seven Billion. All four dates are offered together in questions, so learn the ladder as five billion in 1987, six billion in 1999, seven billion in 2011 and eight billion in 2022. Note also that the growth rate of world population reached its peak in the 1960s and has been falling since, so each later billion is being added more slowly than the arithmetic of the ladder suggests.

Read the full article: World Population: Distribution, Density and Growth

Practice Questions

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Q1.GeographyEasy

The density of population is usually expressed as

  1. A.Persons per square kilometre
  2. B.Square kilometres per person
  3. C.Persons per thousand births
  4. D.Births per thousand persons
Show answer
Correct answer: A. Persons per square kilometre

Density of population is a ratio between the number of people and the area they occupy, and the standard unit is the number of persons living in one square kilometre; it is the simplest way of measuring the pressure of people on land.

Q2.GeographyMedium

An Essay on the Principle of Population, published in 1798, was written by

  1. A.David Ricardo
  2. B.Thomas Malthus
  3. C.Adam Smith
  4. D.Alfred Marshall
Show answer
Correct answer: B. Thomas Malthus

In this essay of 1798 Malthus argued that population tends to increase in a geometric progression while the means of subsistence can increase only in an arithmetic progression, so growth must be restrained either by positive checks such as famine, disease and war, or by preventive checks such as late…

Q4.GeographyMedium

In which stage of the demographic transition are both the birth rate and the death rate high, so that population grows slowly?

  1. A.The first or high stationary stage
  2. B.The second or early expanding stage
  3. C.The third or low stationary stage
  4. D.The stage of population explosion
Show answer
Correct answer: A. The first or high stationary stage

In the first stage of the demographic transition the society is rural and agrarian, life expectancy is low, medical facilities are poor and literacy is low, so both the birth rate and the death rate are high and they roughly cancel each other, leaving population almost stationary.

Q5.GeographyMedium

A population pyramid with a very broad base and a narrow top indicates

  1. A.A declining population
  2. B.A high birth rate and a young population
  3. C.An equal number of men and women
  4. D.A high dependency of old people
Show answer
Correct answer: B. A high birth rate and a young population

The width of each bar in a population pyramid shows the share of that age group, so a broad base means that children form a very large part of the population, which happens where the birth rate is high; the narrow top shows that few people survive to old age.