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The Colorado River is a powerful geologic agent — powerful enough to have carved the Grand Canyon. This program focuses on how such carving takes place over time, looking at erosion and deposition processes as they relate to river characteristics and type of rock. The evolution of rivers is covered, along with efforts to prevent harmful consequences to humans. (28:54)
Found by laneyk in Water Erosion
March 9, 2010 at 09:23 PM
Ages: 16 - 18
License: Undetermined
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This 3:44 long video is about Chaco Canyon, a shallow, ten-mile canyon situated in the northwest corner of New Mexico. The canyon has been carved from ancient sea beds by centuries of erosion. Millions of years of history reveal themselves in the layers of rock and fossils.
Evidence suggests that the Chacoans were expert skywatchers, with a clear knowledge of the cyclic and seasonal patterns of the sun, moon, and stars. This video shows some of the structures and explains their possible importance.
Found by freealan in New Mexico
November 12, 2011 at 02:10 PM
Ages: 7 - 18
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They begin in an instant, often without warning. Many factors can contribute to mudslides, including erosion, fire and heavy rain. The aftermath can be devastating. (02:06)
Found by teresahopson in Soil and Erosion
January 11, 2018 at 04:47 PM
Ages: 10 - 18
License: Proprietary
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Views: 2701 |
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Ocean basins are filled with loose sediments — the products of erosion. Most marine sediment originates inland and is fed into oceans by rivers. Debris from cliffs and other coastal landforms provides additional sediment volume, as do skeletons, shells, teeth of marine organisms, ash from volcanoes, and even asteroids. In this interactive resource adapted from the National Park Service, learn how these different parent materials influence the color and size of the materials that compose a beach, as well as other reasons why some beaches are composed entirely of fine sand, while others are a mix of pebbles and shells.
Found by Mrs Jefferies in Sedimentary Rocks
April 29, 2012 at 11:10 PM
Ages: 10 - 18
License: Proprietary
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Common Ground planting bulrush in the wetlands outside of New Orleans. Planting bulrush helps stop soil erosion and wetlands loss. The wetlands are important barriers against hurricanes. (02:22)
Found by tinag1974 in Wetlands
August 18, 2009 at 04:29 AM
Ages: 10 - 18
License: Proprietary
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Views: 1143 |
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Which trees are dangerous to humans? There are over 3 trillion trees on our planet that clean our air, help prevent water pollution and soil erosion, and provide us with oxygen and shade on a hot day. (10:10)
Found by teresahopson in Plant Adaptations
June 1, 2019 at 03:21 PM
Ages: 10 - 18
License: Proprietary
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Forgot to mention that the Anasazi ruins in front of the North American Underground chambers have nothing to do with the original builders of the underground complex. The difference in the erosion degree is visible even to no professionals. If the Anasazi mud bricks we contemporary to the chambers, they would have COMPLETELY disappeared due to erosion LONG AGO already. (09:56)
Found by teresahopson in Ancient Technology (General)
April 13, 2016 at 07:12 AM
Ages: 11 - 18
License: Undetermined
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Views: 608 |
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Surface conditions of the planets Venus and Mars are compared with those of Earth, and scenes of Earth's living landscapes lead into a discussion of how unique Earth truly is. Major topics addressed in the series, including plate tectonics, natural resources, seismology, and erosion, are introduced in this program.
Found by laneyk in Earth Revealed (series)
March 9, 2010 at 08:59 PM
Ages: 16 - 18
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More than 60% of Sydney’s harbour shoreline has been replaced by seawalls to protect infrastructure from erosion, depriving smaller fish of their natural habitats. To help redress the imbalance and increase marine biodiversity, the Opera House has embarked on an innovate three-year research project, led by UTS Professor of Marine Ecology David Booth, to install a modular artificial reef underwater around Bennelong Point.(01.51)
Found by andrewvanzyl in Coral Reefs
June 13, 2019 at 07:58 AM
Ages: 12 - 18
License: Proprietary
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Views: 431 |
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Scientists have long suspected the solar wind of stripping the Martian atmosphere into space, a process that may have turned Mars from a blue world early in its history into the red planet that we see today. NASA's MAVEN orbiter arrived at Mars and began studying its upper atmosphere. Now, MAVEN has returned significant measurements of solar wind erosion at Mars, observing ions in the upper atmosphere as they pick up energy from the electric field of the solar wind and escape to space.
(01:30)
Found by teresahopson in Atmosphere on Mars
March 19, 2020 at 07:08 AM
Ages: 11 - 18
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NASA's Mars Reconnaissance Orbiter takes stunning photos of the Martian surface with its High Resolution Imaging Science Experiment (HiRISE) camera. These spectacular images give scientists clues about changing weather, erosion, and topography on Mars. Recently, NASA released hundreds new images from HiRISE, and they're incredibly beautiful. (01:40)
Found by teresahopson in Mars' Landforms
March 8, 2020 at 03:13 PM
Ages: 10 - 18
License: Proprietary
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When we throw away our rubbish, it's never really "away", it's just out of sight. But with more than 1,000 English coastal landfill sites at risk of being breached by erosion and flooding, some of that rubbish is coming back into view. The predicted consequences of climate change, including rising sea levels and more extreme weather events, are making scientists afraid that time is running out to protect the sites. (05:38)
Found by andrewvanzyl in Pollution
June 7, 2021 at 06:02 AM
Ages: 14 - 18
License: Proprietary
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200 Miles east of Seattle, Washington lies the Scablands, an unusual landscape full of intriguing layer deposits, gorges, and vast open land that looks as though it has ripples in it. For decades, scientists have wondered what as led to the unique formation of this area. Some believe it was glacial melting, and others believe it was river erosion, or a massive flood millions of years ago. To understand what the truth is behind the landscape, we take a look at the land through geology. (47:47)
Found by teresahopson in Floods
October 25, 2022 at 09:43 AM
Ages: 14 - 18
License: Proprietary
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