"Population Distribution" Population PPT

Description

"Population Distribution" Population PPT

Part One: Learning Objectives

1. Use data to describe the characteristics of population distribution.

2. Explain the main factors affecting population distribution.

Population distribution PPT, part 2 content: 01 Sort out the teaching materials and lay a solid foundation

1. Distribution of world population

1. Distribution characteristics

(1) From a global perspective: nearly 90% of the population lives in the northern hemisphere, especially in the northern latitude _____________ zone.

(2) From the perspective of distance from the ocean: About 60% of the population lives in _______ areas within 200 kilometers from the coast.

(3) From the perspective of altitude: nearly 80% of the population lives in ________ areas below 500 meters above sea level.

2. The four most densely populated areas in the world

(1) Densely populated areas in East Asia: eastern my country, the _______ Peninsula, and central and southern Japan.

(2) Densely populated areas in South Asia: _______, Pakistan, Bangladesh, Sri Lanka and other countries.

(3)_______Densely populated areas in the west: Britain, France, Germany, the Netherlands and other countries.

(4) The densely populated area in eastern North America: the eastern United States and the southeastern part of _______.

3. The population distribution across continents and regions is extremely uneven

(1) Uneven distribution among continents: The population of _______, Africa and Latin America accounts for about 85% of the world's total population.

(2) Uneven distribution among countries: As of the end of 2018, the countries with a population of more than 100 million in the world include China, India, ______, Indonesia, Brazil, Pakistan, Nigeria, Bangladesh, Russia, Japan, Mexico, Ethiopia, and the Philippines wait.

2. Factors affecting population distribution

1.Natural factors

(1) Climate: The world's population is mainly distributed in mid- and low-latitude areas with a more suitable climate.

(2) Terrain: The population distribution tends to be in low-lying areas. The _______ area has flat terrain, convenient transportation, and is easy to develop. It is a major human settlement.

(3) Water source: Generally speaking, rivers and lakes are ______ convenient and have advantages in transportation, aquaculture, etc., which are conducive to human production and life, and the population is relatively dense. In arid areas, places with water for irrigation often become populated areas.

2.Human factors

(1) Social development stage: The population of agricultural society is mainly distributed in areas with developed agriculture; the population of industrial society gathers in ______.

(2) Economic development level: Areas with _______ economic development level are densely populated.

(3) Historical factors: Areas with a longer history are more densely populated.

(4) Political, military, cultural and other factors also have a certain impact on population distribution.

Population distribution PPT, the third part of the content: 02 Exploring key points to improve literacy

Research point: Population distribution and its influencing factors

Inquiry guide

The world's population distribution is extremely uneven, but it has a certain trend.

1. Analyze Figure 1. From the perspective of terrain type, about 56% of the world's population is mainly distributed in ____________ areas. However, habitable places in the tropics are distributed in plateaus and mountainous areas. Let’s analyze the reasons.

Answer: Plain (or plain, basin). Affected by climate and other factors, the population distribution in tropical areas is often concentrated in plateaus and mountainous areas. ① In tropical rainy areas: Mountainous areas and plateaus are suitable for human habitation due to moderate temperatures and precipitation, smooth drainage, and being higher than the distribution line of malarial mosquitoes.

②In tropical arid areas: plateaus and mountains are suitable for human habitation due to their cool climate and relatively high rainfall.

2. Based on Figure 2, infer at what latitudes is the world’s population mainly distributed? Why do areas at the same latitude in the Southern Hemisphere have smaller populations?

Answer: 20°N～60°N. The southern hemisphere has a vast ocean area at the same latitude, so the population is small.

3. According to Figure 3, determine that among the six continents, the continent with the lowest proportion of the population within 200 kilometers from the coast is ________. Try to analyze the reasons.

Answer: Africa: Africa has a straight coastline with few bays. The land area within 200 kilometers from the coast accounts for a small proportion of the total area of ​​the continent. Moreover, most of Africa is located in the tropics. The climate conditions in the inland plateau areas are more suitable than those in the coastal lowlands. Human habitation.

4. Comprehensive analysis shows that the world's population distribution tends to be concentrated in ______ areas, ______ latitude areas and ______ areas.

5. Based on the above trend of world population distribution, which of the following areas are densely populated areas in the world (multiple choices)

A. Ganges Plain B. Amazon Plain C. Western European Plain D. Alaska, USA E. Korean Peninsula F. Tibetan Plateau G. Congo Basin H. Southeastern Canada

Core summary

1. Population distribution characteristics

(1) Characteristics of world population distribution

The basic characteristic of the world's population distribution is that the population distribution area is extremely uneven. Most of the densely populated areas are located in the coastal plains of mid- to low-latitudes in the northern hemisphere. Its distribution analysis is as follows:

(2) Characteristics of my country’s population distribution

2. Geographic factors affecting population distribution

(1)Natural factors

Natural factors are the most basic factors that affect population distribution. The impact of various natural factors on population distribution is shown in the following table:

(2)Human factors

① At different stages of human social development, productivity levels are different, social production methods are different, and the characteristics of population distribution are also different.

②Political, cultural and other factors also have a certain impact on population distribution.

Track training

The Siberian region shown in the picture is an important development area in Russia, where coniferous forests are widespread. Read the picture and answer questions 1-2.

1. The regional geographical characteristics of the area include

① Vast land and sparsely populated areas ② Pleasant climate ③ Convenient transportation ④ Rich minerals

A.①② B.②③

C.③④ D.①④

2. The population density in the southern part of the region is relatively high, which is mainly due to the

①The temperature is more suitable

②Located in plain area

③Long development history

④The economy is relatively developed

A.①②③

B.①②④

C.①③④

D.②③④

Population distribution PPT, part 4 content: 03 class drill knowledge implementation

(2019·End of Middle School in Yangzhou, Jiangsu Province) The picture shows the "Latitude Distribution Map of World Population". The shading indicates the number of people at each latitude. Read the picture and complete questions 1-2.

1. The world’s population is concentrated in

A. Mid- and low-latitude areas of the Northern Hemisphere

B. Mid- and high-latitude regions of the Northern Hemisphere

C. Mid- and low-latitude areas of the southern hemisphere

D. Mid- and high-latitude areas of the southern hemisphere

2. The influencing factors of the concentrated distribution of population in the figure are

A.Topography B.Climate C.Mineral resources D.Transportation

Population distribution is closely related to natural conditions, socioeconomic conditions, etc. Complete questions 3 to 4 accordingly.

3. The Amazon River Basin is a sparsely populated area in the world, and its main influencing factors are

A. Complex terrain B. Hot and humid climate

C. Lack of resources D. Located inland

4. The eastern part of the Brazilian Plateau is a relatively densely populated area in South America. Its main influencing factors are:

① Suitable climate ② Single culture ③ Flat terrain ④ Rich water resources

A.①②B.②④C.③④D.①③

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Update Time: 2024-09-06

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