Continental Drift
... the continents were once joined together came from the close fit between the west coast of Africa and the east coast of South America. Studies have shown that the fit between the continents is actually in the range of 95% along the ...
... the continents were once joined together came from the close fit between the west coast of Africa and the east coast of South America. Studies have shown that the fit between the continents is actually in the range of 95% along the ...
directed reading deforming the earth`s crust
... _____ 2. The process by which the shape of a rock changes because of stress is called a. seismology. c. deformation. b. elasticity. d. re-formation. _____ 3. When stress squeezes an object it is called a. compression. c. convergence. b. re-formation. d. tension. _____ 4. When stress stretches an obj ...
... _____ 2. The process by which the shape of a rock changes because of stress is called a. seismology. c. deformation. b. elasticity. d. re-formation. _____ 3. When stress squeezes an object it is called a. compression. c. convergence. b. re-formation. d. tension. _____ 4. When stress stretches an obj ...
Deforming the Earth`s Crust: Faulting
... Geologic Activity, http://www.nps.gov/pore/naturescience/geologicactivity.htm ...
... Geologic Activity, http://www.nps.gov/pore/naturescience/geologicactivity.htm ...
Section Quiz
... Magma rising to Earth’s surface at divergent boundaries makes midocean ridges volcanically active. when the peaks of volcanic mountains rise above sea level; the Azores in the North Atlantic on the ocean floor at hot spots Hot spots are volcanically active areas that lie far from tectonic plate boun ...
... Magma rising to Earth’s surface at divergent boundaries makes midocean ridges volcanically active. when the peaks of volcanic mountains rise above sea level; the Azores in the North Atlantic on the ocean floor at hot spots Hot spots are volcanically active areas that lie far from tectonic plate boun ...
Appalachian Mountains
The Appalachian Mountains (/ˌæpəˈleɪʃɨn/ or /ˌæpəˈlætʃɨn/, French: les Appalaches), often called the Appalachians, are a system of mountains in eastern North America. The Appalachians first formed roughly 480 million years ago during the Ordovician Period and once reached elevations similar to those of the Alps and the Rocky Mountains before they were eroded. The Appalachian chain is a barrier to east-west travel as it forms a series of alternating ridgelines and valleys oriented in opposition to any road running east-west.Definitions vary on the precise boundaries of the Appalachians. The United States Geological Survey (USGS) defines the Appalachian Highlands physiographic division as consisting of thirteen provinces: the Atlantic Coast Uplands, Eastern Newfoundland Atlantic, Maritime Acadian Highlands, Maritime Plain, Notre Dame and Mégantic Mountains, Western Newfoundland Mountains, Piedmont, Blue Ridge, Valley and Ridge, Saint Lawrence Valley, Appalachian Plateaus, New England province, and the Adirondack provinces. A common variant definition does not include the Adirondack Mountains, which geologically belong to the Grenville Orogeny and have a different geological history from the rest of the Appalachians.