1 Chapter 4 – Section 1 – pages 115-119 The United StatesChapter 4 – Section 1 – pages
2 The Land48 contiguous states, with Alaska and Hawaii make up the 4th largest country in the world.5 main physical regions on the mainland. Alaska and Hawaii are have unique characteristics.
3 Coastal Plain Atlantic Coastal Plain spans from MA to FL. Gulf Coastal Plain is north of the Gulf od Mexico.Soil is thin and rocky in ACP, better in GCP.Good harbors = big port cities.Megalopolis is a large stretch of settled land. Suburbs and cities on the ACP make one.
4 The Appalachian Mountains 2nd longest mountain range in the US.Run from Canada to Alabama down the east coast.Oldest mountains in the US.The area east of the Appalachian Mountains is called the Piedmont, and it is good farming soil.
5 The Interior Plains Central Lowlands Mississippi River Great Lakes Fertile farms and important waterways.Mississippi RiverFlows from Minnesota to the Gulf of Mexico2,340 miles longGreat LakesLargest group of freshwater lakes in the world.Formed by glaciers.Great PlainsRich grasslands that start west of the Mississippi River.Fertile farms and livestock grazing.
6 Mountains & Basins Rocky Mountains Continental Ridge Longest mountain range in North America.Starts in Alaska and ends in Mexico.Continental RidgeSeparates rivers that flow west and east.Formed by plate tectonics.Plateaus (west of the Rockies)ColumbiaThe Great Basin (Great Salt Lake)Colorado
7 The Pacific Coast 2 mountain ranges: The Cascade and Sierra Nevada. Cascade mountains range from WA to CA, and were volcanic in nature.Areas west of the Cascades and the Sierra Nevada are fertile farmlands.
8 Alaska & Hawaii Alaska Hawaii The tallest mountain in the US is Mount McKinley.Borders on the Artic Circle.Most people live in the Yukon River Valley.Hawaii8 main islands and 120 small islands.Coral reefs and underwater volcanoes
9 ClimateMost of the US is in the middle latitude region, so there are a variety of climates.There are 7 main climate zones in the contiguous US.Alaska and Hawaii have their own distinctive climates.
10 Mid-Latitude Climates Marine West CoastPacific CoastMild temperatures & rainyMediterraneanSouthern CaliforniaDry warm wintersHumid SubtropicalSouthern USMild winters, hot summers, violent weatherHumid ContinentalNorthern USCold winters, hot summers
11 Dry ClimatesThe western US, along the Rocky Mountains and plateaus, is a steppe climate.Pacific Mountain ranges block the moisture from the Pacific Ocean.Rocky Mountain keeps the hot dry air trapped.The southwest US is a desert climate with high daytime temperatures and less rain than the steppe climate to the north.
12 High Latitude Climates Most of Alaska is a sub-arctic climate.Cool summers and frigid winters.Sparse vegetation.Heavy rainfall on coast, drier inland.
13 Tropical ClimatesSouthern Florida and Hawaii are the only tropical climates in the US.Heavy rainfall and humid temperatures.Florida is warmer on average than Hawaii because of the Pacific Ocean.