KRIGYAN

Dynamics of Population

Class 8 · Social Science

1 idea in Class 8 Social Science, explained in plain words, with games and quizzes to practise.

Demography and Population Trends

Part of: Economic Life Around Us

Demography = study of human population (size, structure, pattern, trend) by age, gender, occupation, religion. In 2023 India became world most populous country. Indians = about 17 percent of world population. World population: 2.5 billion in 1950, 8.2 billion in 2025, projected 9.7 billion by 2050. India census: every 10 years. Working-age = 15 to 64 years. Population density = total population divided by area in sq km.

Why it matters. Population data drives government planning for schools, hospitals, jobs and infrastructure — understanding it explains why these decisions are made.

Try it in two minutes

  1. Ask: what is demography?
  2. Ask: when did India become the world's most populous country?
  3. Ask: how often is India's census conducted?

Try at home. Ask your child to explain one way demographic data helps governments plan better.

What your child will practise

  • Demography and Population Trends: Candy Quick Fire (Quick Fire)
  • Demography and Population Trends: Explorer'S Map Quest (Match It Up)
  • Demography and Population Trends: Jungle Quest (Flip and Match)
  • Demography and Population Trends: Ocean Puzzle (Clue Puzzle)
  • Demography and Population Trends: Time Travel Quest (Collect the Answer)
  • Quiz: Demography and Population Trends (8 questions)