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This series shows the physical processes and human activities that shape our planet. From earthquakes and volcanoes to the creation of sea-floor crusts and shifting river courses, Earth Revealed offers stunning visuals that explain plate tectonics and other geologic concepts and principles. Follow geologists in the field as they explore the primal forces of the Earth.
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Category Videos
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Not Right For WatchKnowLearn
Ages: 16 - 18
8738 Views:
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Rivers are the most common land feature on Earth and play a vital role in the sculpting of land. This program shows landscapes formed by rivers, the various types of rivers, the basic parts of a river, and how characteristics of rivers — their slope,... channel, and discharge — erode and build the surrounding terrain. Aspects of flooding are also discussed. (28:53)
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March 9, 2010 at 10:22 PM
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Not Right For WatchKnowLearn
Ages: 16 - 18
4388 Views:
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Anyone undertaking a building project must understand mass wasting — the downslope movement of earth under the influence of gravity. Various factors in mass wasting, including the rock’s effective strength and pore spaces, are discussed, as are diffe...rent types of mass wasting such as creep, slump, and landslides. Images of an actual landslide illustrate the phenomenon. (28:54)
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March 9, 2010 at 10:18 PM
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Not Right For WatchKnowLearn
Ages: 16 - 18
4620 Views:
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The Cleopatra’s Needle obelisk in New York City’s Central Park is severely weathered after only 75 years, whereas the dry climate of Egypt has preserved similar structures in that country for millennia. This program shows how weather, climate, chemic...als, temperature, and type of substrate factor into rock and soil erosion. Environmental connections are also considered.
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March 9, 2010 at 10:17 PM
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Not Right For WatchKnowLearn
Ages: 16 - 18
4964 Views:
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This program erodes the myth of the mountain as a solid, permanent structure. Animations are used to illustrate the process of orogeny (mountain building) through accretion and erosion, as well as the role of plate tectonics, the rock cycle, and how ...different types of rock are formed in the course of mountain building.
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March 9, 2010 at 10:08 PM
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Not Right For WatchKnowLearn
Ages: 16 - 18
3388 Views:
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Showing actual footage of earthquakes and their aftermath, this program discusses the forces that fuel these massive events. Faults, waves, and the transfer of energy from the epicenter are explained, and histories of the seismograph and Richter scal...e are presented. The program also describes devices being developed to study — and eventually predict — earthquakes. (28:53)
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March 9, 2010 at 10:11 PM
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Not Right For WatchKnowLearn
Ages: 16 - 18
2708 Views:
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The mysteries of the ocean floor lie hidden under enormous pressure and total darkness. This program looks at the research submersibles and indirect methods used to study the bottom of the sea, providing a glimpse of volcanic activity, formations suc...h as the continental shelf and mid-ocean ridges, and life forms that thrive at extreme depths. (28:54)
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March 9, 2010 at 10:05 PM
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Not Right For WatchKnowLearn
Ages: 16 - 18
2376 Views:
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This program shows the dynamic interaction of two geologic agents: rocky landmasses and the energy of the ocean. Aspects of waves — their types, parts, movement, and impact on the shore — are illustrated. The program also covers shoreline characteris...tics, currents, sea barriers, tides, and how the greenhouse effect could impact sea level and coastal lands.
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March 9, 2010 at 10:27 PM
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Not Right For WatchKnowLearn
Ages: 16 - 18
4044 Views:
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Glaciers
From learner.org, produced by Intelecom
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Many of the world’s most beautiful landscapes were made by glaciers. This program shows how, explaining glacial formation, structure, movement, and methods of gouging and accumulating earth. The program provides images of glaciers and glacial landfor...ms such as moraines, and discusses how study of glaciers may help us understand ice ages and the greenhouse effect. (28:53)
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March 9, 2010 at 10:26 PM
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Not Right For WatchKnowLearn
Ages: 16 - 18
6802 Views:
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The weight of a mountain creates enough pressure to recrystallize rock, thus creating metamorphic rocks. This program outlines the recrystallization process and the types of rock it can create — from claystone and slate to schist and garnet-bearing g...neiss. The relationship of metamorphic rock to plate tectonics is also covered.
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March 9, 2010 at 10:20 PM
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Not Right For WatchKnowLearn
Ages: 16 - 18
4748 Views:
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In the 1960s, earth scientists developed the theory of plate tectonics. This program traces the development of plate tectonics, beginning with the contributions and methods of geologist Alfred Wegener. Sea-floor spreading, continental drift, paleomag...netism, and the primordial super-continent Pangaea are some of the topics covered. (28:54)
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March 9, 2010 at 10:06 PM
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