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Ages: 8 - 18
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Water: State of the Earth
From NationalGeographicVideo, produced by National Geographic
"In 2006 higher levels of carbon dioxide in the air had a negative impact on oceans, hitting marine life hard. A more acidic ocean means weaker shells and skeletons of billions of tiny sea creatures. These creatures may be small, but they create more... [more]
Found by jammin0 in Pollution
April 20, 2009 at 02:41 PM
Not Right For WatchKnowLearn
Ages: 9 - 14
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Our World: The Rock Cycle
From YouTube, produced by NASA
Find out how rocks brought to Earth by the Apollo astronauts have helped NASA learn more about the rock cycle. Compare igneous, sedimentary, and metamorphic rocks found on Earth to three types of rocks found on the moon. (04:09)
June 28, 2010 at 09:24 PM
Not Right For WatchKnowLearn
Ages: 10 - 18
2590 Views:
Violent Hawaii
From pbs.org, produced by PBS
The Hawaiian chain of islands, made up of six main islands plus two smaller ones, stretches for more than 1,500 miles through the heart of the Pacific Ocean. It is a place of idyllic beauty. But it is also a land of volcanic fury, raging mountaintop ... [more]
February 16, 2011 at 09:27 PM
Not Right For WatchKnowLearn
Ages: 8 - 12
2832 Views:
Periodic Table - by StudyJams
From scholastic.com, produced by Scholastic
The periodic table is a chart that scientists use to organize the elements.  The chart shows each element's name and symbol, the number of protons in its nucleus, and its characteristics and room temperature.  The elements are listed in order by thei... [more]
May 23, 2011 at 07:18 PM
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Ages: 7 - 11
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A Day on Earth - by StudyJams
From scholastic.com, produced by Scholastic
As the Earth rotates, light from the sun hits different parts, giving us day and night.  During its orbit, the Earth's tilt on its axis also causes two hemispheres to be different distances from the sun, and that gives us seasons.  Learn more about t... [more]
May 22, 2011 at 06:06 PM
Not Right For WatchKnowLearn
Ages: 9 - 13
4261 Views:
The Kingdoms of Life by StudyJams
From scholastic.com, produced by Scholastic
Scientists group organisms (living things) with similar traits together.  Kingdoms are the largest group, and there are five of them: plant, animal, fungus, protist, and bacteria.  Grouping organisms into kingdoms helps scientists understand the simi... [more]
May 14, 2011 at 11:43 PM
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