Northeast us population density map4/10/2024 ![]() This means that west of these mountain ranges there is much more precipitation than to their east, resulting in arid and semiarid lands. As the air rises to pass the mountains, water vapor condenses and is released as rain and snow. The western United States experiences a strong rain shadow effect. ![]() The Cascade ranges of Washington State and Oregon cut off moisture from falling on the leeward side of the mountains thus eastern Washington State and eastern Oregon are semiarid. As wet air masses move from the Pacific Ocean over the North American continent, they run into the Cascades and the Sierra Nevada. The second climate pattern is created by the rain shadow effect of the western mountain ranges. The second pattern is that there is a decrease in precipitation as you move from east to west across the continent until you reach the Pacific Coast, where rainfall is abundant again. ![]() The first pattern is that temperatures get warmer as you travel from north to south and get closer to the equator. In general, there are two different climate patterns common in North America. The climates of the United States and Canada include the frigid type E climate of the tundra of northern Canada and Alaska, the tropical type A climate of southern Florida and Hawaii, the type C climates of the humid eastern United States, the seasonal type D climates of the northern United States and most of Canada, and the arid type B climates of the Southwest and Great Plains. At the southern and eastern edge of the continent is the Gulf-Atlantic Coastal Plain, a relatively flat zone that extends from New York to Texas. To the north is the Canadian Shield, geologically the oldest part of North America, and a sparsely populated area with poor soils. The interior of the continent is characterized by plains-the Interior Lowlands and the Great Plains. The eastern portion of North America is defined by the ancient Appalachian Highlands, a mountain range that is much less rugged than the Rockies but with no less influence on the history and development of the United States. The western part of the continent is marked by north-south mountain ranges in the Rocky Mountains and Pacific Mountains and Valleys physiographic provinces, with the Intermontane Basins and Plateaus in between. North America is divided into a number of physical regions with distinct landforms. Determine the population distribution of the United States and Canada.Find out which three European countries had the most significant early influence on North America, what parts of the region they dominated, and what their long-term impacts have been.Explain the two dominant climate patterns in North America.Define the physiographic regions of North America.The United States is the world’s largest economy, and both countries enjoy high standards of living as technologically developed countries. Although some natives remain, most of North America’s diverse population consists of immigrants or descendants of immigrants from other world regions. The North American region is highly urbanized-about 80 percent of the population lives in cities-but other vast areas, especially in Canada, are sparsely populated. The Atlantic Ocean borders their eastern edge, and the Pacific Ocean creates their western boundary. The United States and Canada-the second- and third-largest countries in the world in physical area, respectively-make up more than 13 percent of the world’s total landmass. Mexico and Central America are dominated by more tropical climates and were colonized mainly by the Spanish. Both the United States and Canada share similar physical geography characteristics as well as a common development history with either a British or French colonial legacy. Geographers usually study the continent by dividing it into two separate realms based on differences in physical and cultural geography. The realm of North America as a continent extends from the polar regions of the Arctic in northern Canada and Alaska all the way south through Mexico and the countries of Central America.
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