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The Core [electronic resource]: Journey to the Center of the Earth

Lying 4,000 miles beneath the surface and with temperatures nearly as hot as the Sun's, the inaccessibility of the planet's center has long been a problem for researchers. In this program scientists who have journeyed deep within the Earth explain how the core is studied and what findings reveal about the way the planet was formed. Incredibly, the malfunctioning of the Hubble telescope also led experts to a better understanding of the interior, and seismologists detonating explosives make contributions as well. But in Tokyo geophysicists who have recreated conditions at the core are finding evidence that it is cooling faster than previously believed, with serious implications for life on Earth.

The Rock Cycle [electronic resource]

In this program a young environmental engineer takes viewers into the field for an in-depth look at the rock cycle and the geologic processes that occur within Earth's core, mantle, and crust. Using dynamic graphics to illustrate essential terms, the video covers the formation of igneous, sedimentary, and metamorphic rocks; their physical and chemical properties; subgroups and examples of each; and where they fit in to the rock cycle. The video also provides an informative overview of minerals and the methods used to classify them.

Into the Volcano [electronic resource]

Photographer Carsten Peter is obsessed with devising innovative methods for capturing never-before-seen images from some of the scariest environments on the planet. This program joins Peter as he descends into a hell within paradise, photographing one of nature's most violent forces at work. The Emmy-winning cameraman braves toxic gases, treacherous rock falls, and giant pools of molten lava as he rappels inside the active volcanoes of Vanuatu, an island in the South Pacific.
2010; 2001

Peak Oil? [electronic resource]

Peak oil: the point at which oil-producing countries, faced with diminishing crude reserves, can no longer keep pace with growing demand. Has the world already reached it, or is the point of irrevocable decline still decades away? That is the slippery question that frames the narrative of this program as experts from around the world give their views on factors associated with escalating oil concerns: soaring global demand, market speculation, lack of timely upgrades to oil-refining production chains, political turmoil in oil-producing countries, rising costs to explore and tap remote oil fields, and the global oil supply itself, an unknown-and, in the case of Saudi Arabia, an undisclosed-quantity. Although deep-sea drilling and fuel from tar sands, liquefied coal, ethanol, and biodi [...]
2009; 2006

Moving Mountains [electronic resource]

One paradox of geology is that weathering a mountain down can actually make it rise higher. Scientists have learned of this peculiar feedback process only in recent years, and the St. Elias Erosion/tectonics Project (STEEP) team is at the forefront of understanding how climate and the movements of Earth's crust interact to build towering peaks. In this science bulletin, meet geologists of every stripe collaborating on STEEP in Alaska's St. Elias Range, one of the most rapidly growing mountain ranges in the world.

Ways With Coal [electronic resource]

Major research has been devoted to making the processes of coal combustion more efficient and reducing the pollution they cause. Coke, the first smokeless fuel made from coal, has important industrial uses which depend on the grade and strength of the coke. Coke can be carbonized to remove volatile matter which is in turn processed to provide a wide range of industrial materials: pitch, creosote, road tar, and concentrated ammonia solution are some examples. Coal can be gasified and converted into a type of crude oil, which can be fractionally distilled into diesel fuel, gasoline, and chemical raw materials.
2007; 1987

Mining [electronic resource]

In this program, three women with rewarding careers in the mining industry describe their work. Robin Betker is a mining technician who lays drill patterns for long hole drillers; Marilene Larocque is Chief Geologist with a mining exploration company; and Shalni Prowse is a grade control technician who monitors ore quality. Conversations with co-workers and supervisors add to the descriptions of each job.
2007; 2006

Limestone [electronic resource]

Limestone, or calcium carbonate-made of the skeletons of billions of sea creatures-is mined in large quantities. Carefully blasted out of the ground, it is first crushed with huge pestles to eliminate large boulders, then passed through a series of sieves to separate large chunks for further crushing. When sufficiently small, it is washed to remove clay, dust, and sand. The grades are separated: some for road-building, others for processing into sodium carbonate for glass-making. The sand from the wash is separated out and can be made into quicklime and subsequently into slacked lime; the remainder is processed to make cement powder.
2007; 1987

Renewable Energy [electronic resource]

This program examines the urgent need-not only in the U.S. but across the world-for sustainable energy; it also illustrates how new power production methods are becoming a reality. Alternative energy trendsetters are featured, including Time magazine "Hero for the Planet" Geoffrey Ballard, who explains his hydrogen fuel cell innovations. Evergreen Solar vice president Mark Farber describes his company's advanced solar cell production methods and its mission to provide access to energy in the developing world-a goal shared by the Solar Electric Light Fund, says executive director Bob Freling. In addition, Rocky Mountain Institute founder Amory Lovins promotes the benefits of small solar power plants, and economist Hazel Henderson explores the potential of wind energy.
2007; 2005

The Science of Fuels and Gases [electronic resource]

The Earth is surrounded and permeated by gases. This program, a Science Screen Report, looks at the composition, properties, and applications of fuels and gases. Through experiments and real-world examples, it illustrates how the uses of different gases relate to their weight, combustibility, and degree to which they can be compressed or liquefied. The video also discusses how fossil fuels and gases such as methane and hydrogen are applied to heating, cooking, and vehicular travel. Correlates to National Science Education Standards. Produced in association with the Accreditation Board for Engineering and Technology and the Junior Engineering Technical Society.
2006; 2002

Geothermal Energy [electronic resource]: Tapping the Earth's Heat

This Science Screen Report looks at a clean and renewable energy source that is steadily gaining scientific acceptance: hot dry rocks, otherwise known as enhanced geothermal systems. The program shows how masses of heated granite approximately 3 miles underground can be accessed with advanced drilling and computer imaging techniques, and how water forced through fissures in the granite can generate steam to produce electricity. A solid foundation for studying emerging alternatives to fossil fuels.
2006; 2000

Crust, Mantle, and Core [electronic resource]: Earth Inside and Out

The Earth's surface is a fragile mask, and this Science Screen Report reveals the turmoil beneath it. A cutaway view of the planet depicts its layers-including its crust, hot mantle, and superheated core-and leads to an outline of plate tectonic theory. The Himalayas, the Matterhorn, and the Hawaiian Islands are analyzed as examples of tectonic and volcanic activity, while the core's relationship to Earth's magnetic field is also studied. The program includes animation that clearly demonstrates the concept of subduction.
2006; 1999

Our Planet Earth [electronic resource]

If Earth's entire history could be compressed into a single year, modern humans would've appeared just 23 minutes ago! Use this video to introduce your students to the concept of geological time (also called deep time); relative age dating of rock via the principles of stratigraphic superposition, original horizontality, and cross-cutting; absolute age dating by radioactive decay; the chemical elements, heavy and light, that make up the planet; and Earth's three main layers: crust, mantle, and core.

Rocks and Minerals [electronic resource]

Knowledge of the physics and chemistry of the planet's "bones" is essential to a complete understanding of Earth science. Ranging from the Mohs scale and specific gravity to silicates, carbonates, and halides, this video delves deeply into the composition, properties, and classification of rocks and minerals. An element of forensic-type analysis is also brought into play, since any stony formation represents a portion of the planet's history and local conditions.

Energy and Resources [electronic resource]

As the Earth's fossil fuel reserves decline, what forms of energy will come next? After discussing the formation, uses, and consequences of burning coal, oil, and natural gas, this video explores the development of alternative resources that may someday completely replace them: nuclear power, solar energy, biomass, geothermal energy, hydroelectric power, and wind power. Benefits, costs, and environmental impacts are considered.

The Once Good Earth [electronic resource]: Understanding Soil

Beneath our feet lies a world of violence, death, and renewal-the soil. This program takes viewers deep inside that unseen realm, focusing on the chemical and ecological complexity that enriches soil and sustains plant and animal life. A wide array of fungi, microorganisms, insects, and small animals are examined, illustrating the roles they play in the development of root systems and eventually the farms and forests humans need to survive. Highlighting the use of organic fertilizers and pesticides, the program shows that the medium in which life grows and dies is more than the sum of its parts, and that, although the true importance of soil is rarely visible, it must not be taken for granted.
2006; 2005

The Man Who Moved the Mountains [electronic resource]

The map of the Earth is a flat picture of the Earth's surface; this BBC Horizon program presents the story of how Harold Wellman changed that picture. Hired by the New Zealand Geological Survey to map the underlying bedrock of the Southern Alps region, he noticed that there were invariably only two kinds of rock, granite and schist. His search for the boundary between the two led to the discovery of the longest straight line on Earth and a radical new theory that describes the Earth's surface and permits geophysicists to explain how mountains are built, and why they are such a prominent feature of the landscape.
2005; 1992

Atoms, Molecules, and Chemical Change [electronic resource]

Lesson one looks at copper atoms using a Scanning Tunneling Microscope connected to a computer. Several demonstrations of combustion include burning firecrackers under water. Lesson two shows combustion of an industrial diamond. Thermite reaction produces iron metal from iron oxide. Tatara, the traditional Japanese steelmaking process, is described. Lesson three studies chemical reactions between iron powder and sulfur, zinc and sulfur, and copper and sulfur. Chemical combination and decomposition, dry distillation, and pyrolysis are discussed.
2005; 1997