What are the geographical features of China compared with the United States?

The geographical features of China are caused by the thermal difference between land and sea or the movement of planetary wind belts with seasons. The prevailing winds in a large area change with seasons, which is called monsoon. The climate of the area affected by monsoon. The most important feature is that precipitation changes obviously with the rotation of monsoon in a year. East Asia and South Asia are two typical monsoon climate regions, but due to the differences in latitude and geographical location, the monsoon climate also has its own characteristics. Macao belongs to the Asian monsoon, which dominates between the mainland and the ocean in winter and summer. The air pressure is different, the wind direction is opposite, the characteristics of the wind are different, and the weather is very different. From April to August every year, it is controlled by the ocean airflow, blowing southeast wind and southwest wind, which is the summer monsoon; 9. From 10 to February and March of the following year, under the control of continental airflow, north and northwest winds blow, which is winter wind. Because the intensity and advance and retreat time of monsoon are different from year to year, monsoon climate is prone to natural disasters such as drought and flood last year and flood this year. Monsoon climate is a mixture of continental climate and maritime climate. Summer is affected by the warm and humid air current in the ocean, which is hot, humid and rainy, and the climate is maritime. In winter, affected by the dry and cold air currents in the mainland, the climate is cold, dry and rainy, which belongs to the continental climate. In monsoon climate, it is warm in summer and cold in winter. Therefore, the annual temperature is higher than that of the ocean. The most Leng Yue appeared in June 5438+10, showing continental climate characteristics; The hottest month appears in July and August, and the temperature in autumn is higher than that in spring, which also shows the characteristics of maritime climate. For example, the annual temperature in Changsha is 24.6℃, the average temperature in Leng Yue is 4.7℃ in June+10, and the hottest month is July-August. From the monthly average, the average temperature in July is 29.3℃, and that in August is 28.7℃, only 0.6℃ higher than that in August. In fact, in the 30 years from 195 1 to 1980, the average temperature was higher in 1/3 years than in July. Taking Nanjing as an example, the annual variation is 26.0℃, the coldest in October is 65,438+/kloc-0, with an average of 2.0℃, and the hottest in July-August, with an average of 28.0℃ in July and 27.8℃ in August, totaling1951~1. The geographical feature of the United States is that it is located in the south of North America, bordering the Atlantic Ocean in the east, the Pacific Ocean in the west, Canada in the north and Mexico and the Gulf of Mexico in the south. The whole territory can be divided into five geographical regions from east to west: the southeast coastal plain is divided into two parts: the Atlantic coastal plain and the Mexican coastal plain. This area is below 200 meters above sea level, and most of it is formed by alluvial rivers, especially the Mississippi River Delta, which is the largest delta in the world with fertile black soil. There are some swamps near the estuary. Located in this geographical area, Florida Peninsula is the largest peninsula in the United States, and the official language of the United States is English. However, due to geographical obstacles and the passage of time, great differences have taken place between the languages of the United States and Britain. Americans usually speak slowly and gently, and the intonation and stress of the whole sentence are different. Americans don't follow grammar, for example, they often omit prepositions or use nouns as verbs to make the whole sentence concise and casual. In addition, some idioms, phrases and even words are different from English in composition and spelling, and have evolved into American English with American characteristics. In addition, some regions and ethnic groups also use other languages, such as French and Spanish, and Indians use American Indian. Immigrants from different countries and their descendants also use their own languages, forming different language areas in the United States. Because of its vast territory and wide geographical features, the United States has almost all the climate types in the world. The relatively ideal climate of the United States is also one of the reasons why it has become a world power. There are few serious droughts and floods in major agricultural areas, and the temperature is mild, so enough rainfall can be obtained. The climate in the United States is mainly influenced by the Arctic airflow, which brings a wide range of low pressure from the Pacific Ocean every year. When these low pressures pass through the Sierra Nevada, Rocky Mountains and Cascade Mountains, they carry a lot of water. When these pressures reach the Central Plains, they can recombine, leading to the meeting of major air masses and severe thunderstorms, especially in spring and summer. Sometimes, these rainstorms may join other low pressure, continue to spread to the east coast and the Atlantic Ocean, and evolve into a more intense northeast storm (Nor'easter), resulting in large-scale heavy snowfall in the northeastern United States and the mid-Atlantic region of New England. The vast grasslands of the Great Plains have also formed many of the most extreme climate change phenomena in the world. The washbasin area and the principle of Columbia River height are arid areas with little rainfall, and the average rainfall in the driest time is less than 15 inch (38 cm). The southwestern United States is an arid desert. In the hottest weeks of summer, the temperature exceeds 100 degrees Fahrenheit (38 degrees Celsius). The southwest and washbasin areas will also be affected by the monsoon from the Gulf of California, occasionally bringing rare rainstorms. Most of California has a Mediterranean climate, and sometimes there will be heavy rain from June 10 to April of the following year, while it hardly rains in other months. It rains all the year round in the northwest near the Pacific Ocean, but it rains the most in winter and spring. The western mountainous area absorbs enough water, and the rainfall and snowfall are quite heavy. Cascade Mountain is one of the places with the largest snowfall in the world, but there is not much snowfall in the coastal areas with low altitude. Population and ethnic origin According to the population survey once every ten years, the current population of the United States is 226,545,805 in 1980, of which 1837 10000 is white and more than 26.49 million is black. Black people are the largest minority in this country. 1 1% of the total population. 6 million mexican american, including whites, is the second largest minority in the United States. There are nearly 800,000 American Indians in the United States. Every American is basically an immigrant or a descendant of immigrants. Indians, Eskimos and Hawaiians were the first indigenous people to settle in America. Most of the early immigrants in the United States came from Europe. But before and after the American Revolution, a large number of immigrants flocked from all over the world, including Germans in Pennsylvania, Dutch in new york, French in Louisiana and Spanish in Florida and California. At the same time, there are many black slaves introduced from Africa in the south. Agriculture. From 1840 to 1860, nearly 4.4 million immigrants flooded into the United States. They are attracted by developing cities and industries, fertile soil, undeveloped land in the west, freedom and wealth. Immigrants kept pouring into the United States, and it was not until the early 20th century that the United States passed laws to limit the number of immigrants. The Second World War left thousands of Europeans homeless. So America opened its doors again. From the end of the 1945 war to today, the United States has accepted as many as 9 million immigrants. However, most Americans are born in America now. /kloc-out of 0/00 people, only nearly 5 people were born in other places. Only nearly 18 out of 100 people are immigrants. Or descendants of immigrants. The foreign countries are Italy, Germany, Poland, Russia, Mexico, England and Wales. The United States has always been regarded as a melting pot, and its people belong to different races and come from different countries. However, they developed the same culture. Most people follow American customs and traditions, and even take an active part in political parties. But there are also some outsiders.