"Population and Race" Residents and Settlement PPT Courseware 5

Description

"Population and Race" Residents and Settlement PPT Courseware 5

1. Growth of world population

calculate:

Number of babies born in 1 year/total population=birth rate

Number of people who died in 1 year/Total population=Mortality rate

birth rate - death rate = natural growth rate

2. Distribution of world population

Population density – refers to the average number of people living per square kilometer

Unit: person/km2

A certain area has an area of ​​4000 km2 and a population of 800,000. What is the population density of the area?

200 people/km2

3. Population Issues

(1) The seriousness of the population problem

1. The era of "population explosion" - 80 million people added every year.

Currently, about 259 people are born every minute in the world, 15,540 people are born every hour, and about 370,000 people are born every day, with an annual increase of about 82.96 million people.

About 38 people are born every minute in our country (an average of 1 person is born in less than 2 seconds), about 2,273 people are born every hour, and about 50,000 people are born every day. The annual net increase in population is about 11.84 million.

2. The needs of population survival and development:

(1) Survival needs: drinking water, food, clothing, housing

(2) Social needs: education, medical care, employment

3. Overpopulation and excessive growth will have a huge impact on the environment, economy and society (food, housing, employment, transportation).

(2) Human beings must control themselves - family planning

(1) Adapt population growth to social and economic development.

(2) Coordinate population growth with the environment and resources.

(3) Overpopulation - family planning.

(4) Underpopulation - Appropriate encouragement of childbearing is still a problem of overpopulation and low quality.

3. Different races - the three major races in the world

Humans can be divided into three main races based on skin color, hair, facial features, etc.: white, yellow, and black.

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For more information about the PPT courseware "Residents and Settlement Population and Race", please click the "Residents and Settlement PPT Population and Race PPT" tab.

"Population and Race" Residents and Settlement PPT Courseware 8:

"Population and Race" Residents and Settlement PPT Courseware 8 Teaching Objectives: 1. Understand the changing trends of world population, and master the problems and countermeasures caused by too fast or too slow population growth. 2. Learn to calculate the natural population growth rate and population density. 3. Master the world population distribution..

"Population and Race" Residents and Settlement PPT Courseware 7:

"Population and Race" Residents and Settlement PPT Courseware 7 Course Standards 1. Understand the characteristics of population growth and distribution. 2. Understand world population issues and their impact on society, the environment and the economy. 3. Understand the characteristics and distribution of the three major human races in the world. Knowledge and Abilities 1. Learn...

"Population and Race" Residents and Settlement PPT Courseware 6:

"Population and Race" Residents and Settlement PPT Courseware 6 1. Use maps and information to describe the characteristics of world population growth, and draw relevant columnar line charts based on relevant demographic data. 2. Use maps to describe the characteristics of world population distribution and analyze their impact on world population.

File Info

Update Time: 2024-11-21

This template belongs to Geography courseware People's Education Edition Geography for Grade 7 Volume 1 industry PPT template

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