the united states and canada physical geography 1
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The United States and Canada
Physical Geography
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Abundant Natural Resources
Water Forests Arable land Oil (some is in environmentally protected areas) Minerals
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Landforms
The U.S. and Canada have several major mountain ranges:
A.The Rocky MountainsB.The Appalachian MountainsC.Pacific Coastal Ranges
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The Rocky Mountains
The Rocky Mountains extend about 3,000 miles from Alaska south to New Mexico. They are younger and taller than the Appalachian Mountains. The Continental Divide is the line of highest points in the Rockies that marks the separation of rivers flowing eastward and westward.
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The Appalachian Mountains
The Appalachian Mountains extend about 1,600 miles north to south from Newfoundland in Canada to Alabama.
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Pacific Coastal Ranges
A series of small mountain rangesstretch from southern California to Washington. These ranges are low in elevation and right on the coast. They make the coastline rugged and steep. This area is also on the Ring of Fire and has many active and dormant volcanoes. Earthquakes are common in this area.
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Other Landforms
A.The Canadian ShieldB.Interior LowlandsC.Atlantic and Gulf Coastal
PlainsD.Basin and RangeE.Great PlainsF.Grand Canyon
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Canadian Shield
The Canadian Shield is a rocky, mainly flat area around Hudson Bay.
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Interior Lowlands
An area that spreads from the Appalachian Mountains to the Mississippi River. This area is mostly flat with rolling hills.
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Arctic and Gulf Coastal Plains
These are flat, low areas that stretch along the Gulf of Mexico in the south and the Arctic Ocean in the north. The Arctic Coastal Plain is tundra.
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Basin and Range
Flat, dry deserts mixed with long, steep mountains; American Southwest.
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Great Plains
A largely treeless flat area that extends from Canada down to Mexico. The soil is very fertile and good for farming but the climate can be harsh with cold winters and hot summers. This area also gets many tornadoes.
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The Great Plains
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Tornado Alley
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Grand Canyon
The Grand Canyon was formed by water erosion from the Colorado River. The canyon is 277 miles long and ranges in width from 4 to 18 miles. Most of the canyon is in Grand Canyon National Park in Arizona.
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Groups of Islands
A.Hawaiian Archipelago - A group of 19 islands and islets in the Pacific Ocean that formed over a hotspot in the earth’s crust. The largest island, Hawaii, has an active volcano.
B.Aleutian Islands - A chain of over 300 small volcanic islands that extend from Alaska to Russia.
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RiversSome major rivers in the North America are:
A.MississippiB.St. LawrenceC. ColoradoD.ColumbiaE. Rio GrandeF. MacKenzie
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Mississippi River
The Mississippi River is the longest river in the United States with a length of 2,357 miles. The river is an important transportation route from the grain producing states of middle America to the Gulf of Mexico.
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St. Lawrence River
The St. Lawrence River connects the Great Lakes to the Atlantic Ocean. The river has a system of locks that allow large ships to transport loads of minerals and goods. Part of the river serves as the boarder between Canada and the United States.
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Colorado River
The Colorado River flows from Colorado to the Gulf of California. The river formed the Grand Canyon by erosion and it is an important source of fresh water in an arid region. The Hoover Dam on the river provides electricity for Los Angeles.
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Hoover Dam
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Columbia River
The Columbia River is the fourth largest river in the U.S. and the largest river in the Pacific Northwest. The river has many dams that are used to create hydroelectric power. The dams have impacted the local salmon industry.
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Rio Grande
Forms part of the border between the USA (Texas) and Mexico.
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Mackenzie
Longest River in Canada. Flows from the Northwest Territories to the Arctic Ocean.
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Other Water Features
Some other important water features are:
A.Gulf of MexicoB.Great LakesC. Arctic OceanD.Pacific OceanE. Atlantic OceanF. Hudson Bay
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Climate
Canada and the United States are in the middle and high latitudes. The most common climates are:
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Climate
Semiarid = Great Plains into the SouthwestArid = SouthwestMarine West Coast = Coast of Oregon and WashingtonMediterranean = Coast of Southern CaliforniaTundra = Northern Canada and AlaskaTropical Wet = Hawaii
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The tundra is a flat treeless plain with lichens, shrubs,and some flowers.
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The taiga is a coniferous forest that grows in subarcticclimates. Only coniferous trees grow because of the Lack of sunlight in the wintertime.
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