Social Science Question(1 Marks)

The main reason for this growth was that with better food supplies and medicine, deaths were reducing, while the number of births still remained fairly high.

In United Kingdom, population growth is slowing because of both low death and low birth rates.

Emigrants are people who leave a country.

The change in the number of people during a specific time is called population change.

Human resources like other resources are not equally distributed over the world. They differ in their educational levels, age and sex. Their numbers and characteristics also keep changing.

An age-sex pyramid is a graph showing the number of males and females under certain defined age groups.

Population refers to the number of people living in a particular region.

Life expectancy is the number of years an average person can expect to live, based on data.

The average density of population in the whole world is 45 persons per square km.

Within countries large number of people may move from the rural to urban areas in search of employment, education and health facilities.

The difference between the birth rate and the death rate of a country is called the natural growth rate.

Average density of population in India is 324 persons per square km.

Human beings differ from each other in age, sex, education, ethnicity, culture, physical and mental strength, etc.

Population pyramid is a graphical presentation of the age, sex composition of a population.

Population density is the number of people living in a unit area of the earth’s surface. It is normally expressed as per square km.

Birth rates refer to the number of live births per 1000 people.

Osaka city is located in Japan.

Death rate refers to the number of deaths per 1000 people.

Life expectancy refers to the number of years that an average person can expect to live.

A country with a large population in a small area is more densely populated out of the two.

Asia.

Generally, people migrate from less developed countries to more developed ones. This is done for better employment opportunities and other facilities.

The way in which people are spread across the earth surface is known as the pattern of population distribution.

Immigrants are those who arrive in a country.

Migration refers to the movement of people from one area to another.

If 600 people live in a 2 sq km area, on an average, 300 people live in 1 sq km. So density of population is 300 persons per sq km.

The population density of the world is around 45 persons per sq km, whereas that of India is over 320 persons per sq km.

Around 61% of the world’s population lives in Asia, 12% in Europe, 13% in Africa, 8% in Central/South America, 5% in North America and 1% in Oceania.

In 1999, the world population reached 6 billion.