Flood: Farming and Erosion
Farmers and rivers have a close, though not always friendly, relationship with one another. Rivers can create prized farmland, but they also flood fields and the communities built alongside them. What's more, farming practices may contribute to an increase in the magnitude and intensity of river flooding. This video segment adapted from NOVA explains the flooding problem and suggests possible solutions.
Cave Formations: Biogeochemical Cycles
The most common process by which limestone caves form involves carbonic acid — or weakly acidic groundwater — as the primary agent. When carbonic acid contacts limestone, it dissolves minerals in the rock. If enough water to saturate the rock is present over a long time period, cavities and entire underground cave networks can form. Recently, a radical new theory has been proposed that identifies another cave-forming agent: sulfuric acid. This video segment adapted from NOVA identifies the m
Inside a Volcano
Explore the science and beauty of these natural features. Video gives history that the Earth was once an icy ball others believe Earth was cold, but not quite ice. 700 million years ago the Earth was much colder. Volcanoes warmed the surface of the Earth, video shows a volcano that erupted in 2004 where a volcano was filmed erupting through an ice sheet in Central Iceland, this is what would have happened millions of years ago but on a globa
Solar Technology GE researcher Vlatko Vlatkovic discusses solar technology development at GE from the roof of GE's global research center in New York. It is a solar panel test set up. He shows a silicone solar cell and explains how the sun hits the cell and is converted to energy. He explains that the system is still very expensive and not very attractive and how they are trying to produce a more efficient, less expensive, and a better looking u
GE researcher Vlatko Vlatkovic discusses solar technology development at GE from the roof of GE's global research center in New York. It is a solar panel test set up. He shows a silicone solar cell and explains how the sun hits the cell and is converted to energy. He explains that the system is still very expensive and not very attractive and how they are trying to produce a more efficient, less expensive, and a better looking u
Salinity Density Demonstration
Salinity affects the density of water. In this video, 9th grade teacher Rod Benson performs a demonstration on the study of ocean currents for his students using golf balls. The step by step narrative demonstration uses golf balls with fresh water and salty water.Explanations are included. This would also be a great demonstration while teaching density.
The Animal Life in Reefs
Learn about the animal and plant life in the coral reefs with this professional video from World Wide Media. Also learn about the effect of global warming on the reefs. Run time 5:24.
The coldest, windiest place on Earth holds 60 percent of the fresh water on the planet. Recent expeditions to the Weddell Sea produced more than 700 new species, including giant carnivorous sponges. Produced by National Geographic. Run time 04:28.
Origins of Oceans
Three Quarters of our Earth is covered with water. Explore how half of Earth's water originated from the planet's inception and how the other half was deposited by comets. Find out why our planet is called the "Blue Planet" and why earth is different from all the other planets.
National Geographic - History Of Earth's Oceans
An ocean is a major body of saline water, and a principal component of the hydrosphere. Learn more in this brief overview of the history of water on this planet.
Where Did Our Oceans Come From?
Explore how half of Earth's water originated from the planet's inception and how the other half was deposited by comets. (03:46)
This is a clip from a larger segment.
Marine biologist Tierney Thys asks us to step into the water to visit the world of the Mola mola, or giant ocean sunfish. Basking, eating jellyfish and getting massages, this behemoth offers
"Pychedelic" Fish Hops on Seafloor
A newly discovered frogfish is seen here. It is dubbed the psychedelic fish because of its colorful stripes and hops along the seabed by flexing its lower fin and shooting water from its gills. This new species was found in 2008. Run time 01:53.
A Basic Explanation of Global Warming
How does global warming work? Here is a quick explanation with graphics - presented by former American Vice President, Al Gore. Run time 01:05.
A Wat Forward: Facing Climate Change
In this short documentary you can explore the global impact of climate change and its devastating effects. Learn what scientists suggest in response to these changes. Run time 07:43
Climate Change: State of the Earth
In 2006, Arctic sea ice shrank 6 percent more than it usually does, thus further speeding up global warming and threatening the survival of polar bears. Scientists discuss the ramifications and possible causes. Run time 05:59.
Global Warming and Polar Bears
Learn about global warming and its affects on the endangered polar bear in the Arctic. Run time 03:12.
Disappearing Alpine glaciers are a sign of global warming. In this movie learn how Austria's Goldberg Glacier is shrinking. You can see first-hand a valley that once was completely covered by ice that is now a barren, rocky wasteland with a small stream running through it. Run time 02:41.
Amphibians May Give Us Clues to Our Changing Climate
Changes in amphibian populations may offer clues to changes in our climate. In the Rock Mountains scientists spend their summers studying wind, weather, plant life and amphibians. The salamander population in this area fluctuates year to year and they are trying to determine if this decline is caused by global warming or humans. Run time 03:14.
Causes and Consequences of a Climate Change
This is a video on Global Warming Narrated by Leonardo DiCaprio. It lists the causes of global warming and the consequences it has. It explains what it is and how it works. It addresses the nonrenewable resource of fossil fuels in great lenths and suggests possible solutions. Run time 4:44.
Everyone knows that water can't flow uphill. Not so fast... when this goo is poured back and forth between two beakers, Gravi-Goo mysteriously siphons from the higher held beaker to the lower one. Maybe water can flow uphill. An explantation is provided. Run time 02:59.