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At one point or another, everyone wonders about the universe. What is it? Where did it come from? And most of all, where does Earth fit into the equation? This module puts Earth and the experience of earthlings into the context of the solar system, the galaxy, and the universe at large.
How long has Earth been around? How did the planet form? What is it made of? And how in the world do scientists begin to investigate the history of the planet? So many questions! This module's got the answers.
Wait a sec. Earth is hot on the inside? The continents MOVE? And some German guy named Alfred Wegener noticed that Africa and South America fit together like puzzle pieces? That sounds like a magma-filled layer cake of mystery. Care to dig in?
Sometimes Earth can be more sensational than a tabloid magazine. It's full of drama, drama, drama. This module documents some of the more wild times on the planet and what it's all got to do with plate tectonics. It might even contain some revealing photographs.
Sure, we've all gone sleigh riding on glaciers, buried stuffed animals in the backyard, and had the wind or a sudden wave steal a baby duckling right from our hands. But have we ever stopped to ask what glaciers, soil, wind, and waves are really up to on planet Earth? Now's the time!
How do you turn this thing off? Well, you can't. This is Earth, and the power button is always switched on. The energy is always fl owing. But where is the button? Where does this energy come from? You're about to find out.
Earth has got swirl. The air in the atmosphere swirls. The water in the ocean swirls. But what does it all have to do with weather and climate? To answer this, we'll have to get a close-up on all that swirl. Don't worry, being dizzy is fun!
All systems on Earth end up working together in the end. Honestly, it's more heartwarming than the last day of summer camp. But sometimes people get in the way, like that kid who keeps hiccupping during the group meditation. Can the hiccups be cured? Can humans live in harmony with Earth systems? Let's talk about it.
Award-winning photography shows glacial erosion and deposition in action! Advancing ice masses carve U-shaped valleys and leave a trail of lakes and erratics, while melting glaciers deposit kames, drumlins and outwash plains. Covers Alpine and Continental glaciation. Animation sequences help explain key processes.
Review
"The best I have seen on this topic." - Dr. John S. Moyle Bronxville, NY High School
Comprehensive program on the development of the modern theory of an active, restless earth and its interior structure. Traces Wegener's ideas on continental drift to the discoveries of the mid- ocean ridges, paleomagnetism, abyssal trenches, sea-floor spreading, transform faults and the global pattern of shifting tectonic plates.
Review
"..excellent coverage of principal ideas." - JOURNAL OF GEOLOGICAL EDUCATION
Probes the origin and nature of seismic waves using spectacular scenes of earthquake effects. Examines P and S waves, epicenters, transcurrent and transform faults, with emphasis on the San Andreas fault and subduction zone earthquakes. Relates seismic activity to plate tectonics. Extensive section on earthquake planning.
Review
"..the graphics, pictures and narration are superb."
Examines the general oceanic circulation ranging from barely discernible drifts to surging warm currents, cold upwellings and bottom currents that spread icy waters from pole to pole. Shows how winds are the driving force behind most currents and how both systems are responsible for the global distribution of solar energy. Includes a fascinating account of how the El Nino event affects worldwide weather.
Introduces a scientific revolution! Shows how the "Permanence" theory was replaced by sea-floor spreading to explain the origin of the ocean basins. Covers the roles of magnetic anomalies and paleomagnetism, sediment studies, and heat flow along the mid-ocean ridge in verifying the new theory.
A spectacular visual study of basaltic and andesitic volcanism. Eruption scenes of the Hawaiian volcanoes - with their massive flows of dark, viscous lava - are contrasted to the explosive nature of Mount St. Helens and its ash clouds derived from water-rich magma. Explains hot spot and subduction zone volcanism and their relationships to broader tectonic theory. Accurate and up-to-date.
Review
"..many noteworthy features. Excellent for introductory and review purposes.." - 4 Stars, JOURNAL OF GEOLOGICAL EDUCATION
Opens with the origin of the atmosphere, then traces the path of water from the great reservoirs of the oceans through evaporation, condensation and precipitation over the land to its eventual return to the ocean. Shows the relentless erosive action of running water, how small rivers cut deep valleys, and the more subtle effects of chemical weathering.