Characteristics of topographic distribution in America

Topographic features of the United States The United States of America is located in central North America, bordering the Atlantic Ocean to the east and the west coast.

The Pacific Ocean borders Canada in the north and Mexico and the Gulf of Mexico in the south. belong to

Las California is located in the northwest of North America, and Hawaii is located in the north of the central Pacific Ocean.

Department. The total area is 93726 1.4 square kilometers. The coastline is 2 2 meters long.

6 8 0 kilometers.

It was originally a settlement of Indians. Spain, Netherlands,

France, Britain and so on immigrated here one after another. /kloc-before the 0/8th century, Britain was in North America.

1 3 colonies were established along the Atlantic coast. 1 7 7 5 broke out.

The war of independence against British colonial rule. 1776 July 4th colonization

People's Republic of China (PRC) issued the Declaration of Independence, announcing the establishment of the United States of America.

1 7 8 3 At the end of the War of Independence, Britain recognized the independence of 1 3 colonies.

. 1 7 8 7, the constitution of the United States was passed and a federal republic was established. 1 8 0

In 3 years, I bought Louisiana from France (located in a vast area in the central United States).

), 1 8 1 9 bought Florida from Spain, 1 8 4 5 invaded.

Texas, Mexico. After the war against Mexico in 1 8 4 8,

, got New Mexico, Arizona, California and other places. 1 8

1953, it seized southern Arizona and New Mexico from Mexico.

A piece of land in southwestern Mexico. 1 8 6 7 bought it from Russia.

Las Vegas and Aleutian Islands. 1 8 9 8 annexed Hawaii. these

Later, local governments applied to join the Federation, forming 5 0 states.

America. 1 9 7 9 65438+ 10/establish diplomatic relations with China.

resident

26 1.7 million, mostly descendants of European immigrants, black.

Americans (about 65438+ 0.2% of the national population), Indians, Mexicans,

Puerto Ricans, Chinese Americans and overseas Chinese. Black Americans are

More than 3 0 0 years ago, it was trafficked from Africa to the American continent by European colonists.

Half a century ago, 80% of African slaves who came here were concentrated in the south.

At present, most blacks live in new york, Chicago,

Los Angeles, Philadelphia, Detroit, Washington and other cities. Indians are

Half of the early Americans were forced to live on "Indian reservations"

"。 Mexicans mainly live in California in the west and southwest.

Arizona, New Mexico, Colorado and Texas. wave

The Doric people are mainly concentrated in new york, Chicago and other cities. Religion in America

Believers account for 85% of the total population, mainly believing in Christianity, Protestantism and God.

Teaching, general English.

natural environment

The local terrain is high in the east and low in the west, and the main mountains run north and south.

In the east, the Appalachian Mountains constitute an ancient mountain range, and the Atlantic coast is flat.

Original; In the west is the Cordillera mountain system composed of vast plateaus and mountains, including

Rocky Mountains in the east, Sierra Nevada and coastal mountains in the west, and two other mountains.

Between the inland plateau and great basin. The highest mountain in the country is wheat in Alaska.

Jinlifeng, 6193m above sea level. The dead valley in the southwest of the plateau is below sea level.

The surface is 8 5 meters, which is the lowest point in the American continent; The central plain is low and flat.

Fertile soil is the most important agricultural area in the United States, and the western plain is famous far and wide.

The famous prairie. The Mississippi River is 6 2 6 2 meters long, and the Missouri River is its source.

Kilometers, the fourth longest river in the world, flows southward through the plains and into Mexico.

Bay. The Great Lakes in the northeast are the largest freshwater lakes in the world, Lake Superior.

Erhai Lake covers an area of 82,400 square kilometers and is the largest freshwater lake in the world.

Between Lake Erie and Lake Ontario, there is the famous Niagara Falls.

The Great Salt Lake in central China is the largest salt lake in North America.

The northeast coast and the Great Lakes region belong to the continental temperate broad-leaved forest climate, which is affected by

Affected by the Labrador cold current and the cold air from the south, it is colder in winter and warmer in summer.

It is rainy and rainy, and the average annual precipitation is about100 mm; southeast

Moreover, the coast of the Gulf of Mexico has a subtropical forest climate, which is affected by the Gulf warm current.

The voice is loud, warm and humid, and the average annual precipitation exceeds 2 0 0 0 mm; middle

The cold and warm air in the plain can drive in directly, and it is hot in summer and cold in winter.

Snow; The western inland plateau is dry and cold in winter, dry and hot in summer and flat all year round.

The average precipitation is below 5 0 0 mm; The southern part of the western Pacific coast belongs to Asia.

Tropical Mediterranean climate, the northern section belongs to the marine temperate broad-leaved forest climate.

natural resource

Rich in natural resources. Coal, oil, natural gas, iron ore and potassium salt.

, phosphate, sulfur and other mineral reserves rank among the top in the world, and other minerals are

Aluminum, copper, lead, zinc, tungsten, molybdenum, uranium, bismuth, etc. Total coal reserves 3 6 0

0 0 billion tons, 27 billion barrels of crude oil and 560 billion barrels of natural gas.

00 billion cubic meters. Appalachian mountains are rich in coal, iron and minerals.

Ferrous metals, oil and natural gas are mainly distributed in the Central Plains. Forest cotton

The total area is 2.05 million square kilometers. Grassland and mountain pastures account for the total area of the country.

28%, the hydraulic reserve is about10.30 billion kilowatts. Working core

There are 1 1 0 reactors.

General situation of economy

World economic power. The economy is highly developed, and the industrial and agricultural production categories are neat.

All-round and intensive, the gross national product ranks first in the world. 1 9

1993, the gross national product exceeded $640 billion, and industry has the strength (

Including oil, natural gas, coal mining, electric power), steel, nonferrous metallurgy,

Machinery manufacturing (including aviation rockets, automobiles, shipbuilding, motors),

Atomic, chemical, textile, arms and other departments. Major industries in 1 9 9 2

Product output: 2.6 billion barrels of crude oil and 654.38 billion tons of coal, with a total power generation of 2 7 8.

More than 0 billion kwh, more than 93 million tons of steel, 1 000 vehicles.

The car is bigger than the weight. The annual output of sulfuric acid is nearly 40 million tons, and that of cement is 6.

The output of paper and paperboard is 60 million tons. The industrial sector in the United States

Cloth can be roughly divided into three areas: first, the northeast industrial zone, located in the west of Michigan.

East of Bibi River, north of Ohio River and Potomac River. This area is in the national economy.

The economy is dominant in China. Mainly processing industry, including metallurgy, machinery manufacturing,

Chemical, textile and other industrial sectors. Two, the southern industrial zone, the mining industry is

Major processing sectors have developed, including petroleum, chemistry and shipbuilding.

Military industry plays an important role in the national economy. Three. Western industrial zone

Industrial sectors are relatively simple, such as aviation rockets, electronics industry and atomic industry.

Waiting for rapid development. The western mountainous area is a mining area.

Agriculture in the United States is mainly run by large farms and is highly developed.

The degree of mechanization is very high, mainly including animal husbandry and farming, as well as livestock.

Cattle are the main animal husbandry, followed by pigs and poultry, with a population of more than 1 100 million.

More than 50 million pigs. Crops include corn, wheat, soybeans and cotton.

Tobacco, potatoes, oats, rice, oranges and sugar are the most important.

Vegetables and so on. , the total grain output accounts for about 1/5 of the world's total output, while agricultural products

Foreign exchange income is one of the largest foreign exchange income items in the United States. Wheat, corn

Soybean production ranks among the top in the world.

The United States has the largest import and export trade volume in the world.

The targets are Canadians, Japanese, Germans, British, Mexicans, etc.

Oral chemicals, machinery, vehicles, airplanes, computers, weapons, etc.

. It also dumps a lot of soybeans, wheat, grains, cotton and so on. Main inlet steam

Automobile, electronic equipment, machinery, steel, textiles, natural rubber and platinum.

, tin, chromium, manganese, antimony, nickel, zinc, copper, aluminum, lead, tungsten, petroleum, etc.

.

The freight in the United States is mainly railway, with a total length of 310.8 million.

1000 kilometers, including 3090 kilometers of electrified railway. Connecting the Atlantic Ocean and

Major cities along the Pacific coast and national railways are the main trunk lines. iron

Road freight volume accounts for about 2/5 of the total freight volume in China. National inland river shipping mileage

Over 4 10000 km. The proportion of domestic water freight volume in the national freight volume.

1.5% or more, the Great Lakes are the most abundant, accounting for about 3% of domestic water transport.

Its main waterways are the Mississippi River and the Erie Canal. Since the 20th century

Over the years, pipelines have become an important mode of transportation, mainly for transporting oil and natural gas.

Coal has also been transported in the last ten years, and pipeline transportation accounts for about 1 of the national freight volume.

/5 。 The passenger traffic in the United States mainly depends on roads, accounting for 4/5 of all passenger traffic.

Above, there are about 6.3 million kilometers of expressways in China, south of the Great Lakes.

And there are almost no roads in vast areas of the west. aviation

Passenger transport is the mainstay, and there are routes connecting major cities across the country. Developed shipping, there are

There are nearly 8,000 ocean-going merchant ships with gross tonnage exceeding10000, accounting for 24 million.

Weight tons. More than 2,700 oil tankers,160,000 dwt.

The main seaports along the Atlantic coast are new york, Norfolk, Baltimore and Poland.

Atlanta, Boston, Philadelphia, Jacksonville, New Bay Coast

Orleans, Houston, Port Arthur, and San Francisco on the Pacific coast.

San Francisco, Los Angeles, Seattle, etc.

Important city

The population of Washington, the capital, exceeds 630,000. Established in 1 7 9 1,

Named after George Washington, the first president of the United States. This is national.

Political center. There are only printing and a few food industries in this city. New york: America.

The largest city with a population of 7.35 million. It is one of the largest cities in the world.

Big seaport. National transportation hub and industrial financial center. To foreign trade

The exchange capacity accounts for about 1.7% of the whole country. There are more than 6 0 satellite cities around this city.

. Harlem is a black community, and the United Nations Headquarters is downtown. golden

The center of finance and business is Wall Street. Chicago: the second largest city in the United States,

The population is 3 million. Chicago is a national railway hub with 3 2 trunk lines.

The two lines meet here. The vast hinterland is developed in agriculture and animal husbandry, rich in coal and oil.

National grain and livestock market and commerce, finance and industry in the central and western regions

Heart. Meat processing and ferrous metallurgy rank first in the country. 1.886 May

On June 5438+0, hundreds of thousands of American workers in Chicago and other places held a massive opposition.

The heroic struggle of the bourgeoisie for exploitation, oppression and its own rights. "five

International Labor Day originated here. Los Angeles: the Pacific coast of the United States

The largest city. The population is 3.4 million, including about 1 0,000 Mexicans.

Wan is also one of the cities where blacks are concentrated. For industrial and commercial cities in the western region

And important seaports. There are also industries such as aircraft manufacturing. Hollywood in the suburbs is America.

Film industry center. Philadelphia (Philadelphia): population 1.69 million.

The United States was a temporary capital when it declared independence. This is an important railway hub. a little

Law: population 1.2 million. The largest automobile manufacturing center in the United States. steel

Steel, aircraft and instrument manufacturing industries are developed. San Francisco (San Francisco

): The second largest city on the Pacific coast. The population is 750,000. In western finance

Heart, the port of American Far East trade. The industry is developed and earthquakes often occur. stop

Stone: With a population of 65,438+0,730,000, it is an important seaport in the southern United States and an oil processing center.

Steel and food processing industries are also well developed.

Boston: Population: 560,000. Big cities and seaports on the northeast coast. Spinning and weaving

Industrial center, machinery manufacturing, hardware, food processing industry is also very developed.

There is a famous Harvard University in Cambridge, west of Bo Shi. Miami: population 3 5

Wan. The southernmost big city, port and tourist center in the United States.

other

Important Festival: July 4th, National Day. Thanksgiving.

Date of establishing diplomatic relations with China: 1 9 7 9 65438+ 10/.

Currency: USD.

Time difference: the whole country is divided into four time zones, time difference 1 hour. New York

5 hours later than GMT; 1 3 hours later than Beijing time.

Los Angeles is 8 hours later than GMT; Later than Beijing time 1 6.

Time.

National flower: rose.

National bird: vulture.

National emblem motto: e pluribus unum.

Definition of country name: the United States and the United States are the same word in English.

Fame: the melting pot of nationalities (it contains people of almost all nationalities in the world)

The geographical distribution of the United States is divided into three parts: east, west and east.

East Appalachian mountains

Central great plains

Rocky mountains in the west

The terrain of the United States is distributed in _ _ _ _ _ _. The terrain of the United States is _ high in the east and west, low in the middle, and vertically distributed in the north and south.

The topography of the United States: the Cordillera Mountains are high in the west and low in the east, the Appalachian Mountains are high in the east, and the Central Plains (or Great Plains) is in the middle, which has the characteristics of high in the east and low in the middle and vertical distribution in the north and south.

The topographical features of the United States are that the east and west sides of the United States are high and the middle is low;

In the west is the towering Cordillera Mountains, mainly the Rocky Mountains, in the middle is the vast plain, and in the east is the low Appalachian Mountains.

The terrain of the United States is generally characterized by high east-west and low middle. The west coast is the Rocky Mountains with high altitude. The east coast is also a highland composed of mountains and plateaus; In the middle is the Mississippi River Plain, known as the "Great Plains", which is low and wide.

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Topographic distribution characteristics of Labrador Plateau and Appalachian Mountains in eastern North America.

Zhongyuan Zhongyuan

Rocky mountains in western mountainous areas

What are the topographical features of India? Three topographical regions: Himalayas in the north, Indus Ganges Plain in the middle and Deccan Plateau in the south. Near the Arabian Sea, there are mountains in the west and mountains in the east, near the Bengal bend.

Topographic features and topographic features of the United States The western part of the United States is a high mountain. To the east are low mountains.

The United States is located in the middle of North America, and its territory also includes Alaska in the northwest of North America and Hawaii in the middle of the Pacific Ocean. It borders Canada in the north, the Gulf of Mexico in the south, the Pacific Ocean in the west and the Atlantic Ocean in the east. Most areas belong to temperate continental climate, the south belongs to subtropical climate, and the eastern coastal areas belong to temperate maritime climate and Mediterranean climate. The temperature difference between the central and northern plains (Central Plains) is great. The average temperature in Chicago is MINUS 3 degrees in June and 24 degrees in July. 65438+ 10, the average temperature along the coast of the Gulf of Mexico is 1 1℃, and it is 28℃ in July. The lowest point in China is Death Valley (-86m) and the highest point is Mount McKinley (6 198m). The terrain of the United States is generally characterized by "high on both sides and low in the middle". The west coast is the Rocky Mountains, with a high altitude. The east coast is also a highland composed of mountains and plateaus, with the Mississippi River Plain in the middle, which is called the "Great Plain" with low and wide terrain.

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