Physical features and formation of mountains | Britannica
mountain, Landform that rises well above its surroundings, generally exhibiting steep slopes, a relatively confined summit area, and considerable local relief (inequalities of elevation). Mountains are considered larger than hills, but the term has no standardized geologic meaning.
Mountain | Definition, Characteristics, Types, & Facts | Britannica
2024年12月5日 · mountain, landform that rises prominently above its surroundings, generally exhibiting steep slopes, a relatively confined summit area, and considerable local relief. Mountains generally are understood to be larger than hills, but the term has no …
Appalachian Mountains | Definition, Map, Location, Trail, & Facts ...
2024年12月5日 · Appalachian Mountains, North American highland system that extends for almost 2,000 miles from the Canadian province of Newfoundland and Labrador to central Alabama in the United States, forming a natural barrier between the eastern Coastal Plain and the vast Interior Lowlands of North America.
Los Angeles - Urban, Coast, Mountains | Britannica
2024年12月26日 · Los Angeles - Urban, Coast, Mountains: Los Angeles county is a vast and varied geographic entity. It includes a group of inland valleys, a coastal plain separated by low mountains that are interspersed with steep passes, an …
mountain - Students | Britannica Kids | Homework Help
Knowledge of the origin of mountains comes from analysis of geologically young mountain ranges of high elevation, such as the Himalayas and the Alpine ranges of Asia and southeastern Europe. Older and more deeply eroded ranges such as the Appalachians of eastern North America and the Caledonian Belt of northwestern Europe have also provided ...
Appalachian Mountains - Geology, Plateau, Valleys | Britannica
2024年12月5日 · The Appalachians are among the oldest mountains on Earth, born of powerful upheavals within the terrestrial crust and sculpted by the ceaseless action of water upon the surface. The two types of rock that characterize the present Appalachian ranges tell much of the story of the mountains’ long existence.
Adirondack Mountains | New York, Map, Location, & Elevation
2024年12月13日 · Adirondack Mountains, mountains in northeastern New York state, U.S. They extend southward from the St. Lawrence River valley and Lake Champlain to the Mohawk River valley. The mountains are only sparsely settled, and much of the area exists in a primitive natural state, protected by state law.
Andes Mountains | Definition, Map, Plate Boundary, & Location
2024年12月14日 · Andes Mountains, South American mountain system that contains the highest peaks in the Western Hemisphere. One of Earth’s great natural features, the Andes form an unbroken rampart over some 5,500 miles—from the southern tip of South America to the continent’s northernmost coast on the Caribbean.
Ozark Mountains | Description, Location, Height, & Facts - Britannica
2024年12月19日 · Ozark Mountains, heavily forested group of highlands in the south-central United States, extending southwestward from St. Louis, Missouri, to the Arkansas River. The highest peaks, many exceeding 2,000 feet (600 m) are in the Boston Mountains in Arkansas.
Sierra Nevada | U.S. Mountain Range, Physical Features & History ...
2024年12月18日 · Sierra Nevada, major mountain range of western North America, running along the eastern edge of the U.S. state of California. Its great mass lies between the large Central Valley depression to the west and the Basin and Range Province to the east. Extending more than 250 miles (400 kilometres)