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There are 4 videos in this category and 0 videos in 0 subcategories.
Category Videos
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Not Right For WatchKnowLearn
Ages: 8 - 13
787 Views:
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Ever wonder why a stone sinks in water? Let's make sense of it with science. If you've ever tossed a stone into a lake, you know what happens next-it sinks. Let's find out why. Key vocabulary words are density, volume, sink, float, natural force, gra...vity, upward force, and weight. This is a great resource to help build background knowledge for students and would work well in conjunction with a lesson/unit or reading non-fiction texts on properties of waters, oceans, physics, etc. (1:46)
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August 8, 2011 at 08:54 PM
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Not Right For WatchKnowLearn
Ages: 12 - 18
259 Views:
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An astronaut on the International Space Station observes how water behaves in zero-gravity. This really shows the surface tension of water with a good explanation of what is happening. (02:52)
August 16, 2012 at 09:22 PM
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Not Right For WatchKnowLearn
Ages: 13 - 18
168 Views:
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Rethink the most fundamental resource on Earth—water—through the lens of art, design and science at the U.S. premiere of Surface Tension: The Future of Water. This striking interactive exhibit, created by Science Gallery at Trinity College Dublin, ex...plores water through the exceptional and unexpected: a printer uses water instead of ink to rain words, a music box manipulates air and water to create an ethereal soundscape, a global map made of sponges forms a 3-D representation of water consumption. (00:30)
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December 11, 2012 at 03:12 PM
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Not Right For WatchKnowLearn
Ages: 12 - 18
1120 Views:
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Water and Life
From hippocampus.org, produced by University of California and Monterey Institute for Technology and Education
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This video slide show is accompanied by text: "Water covers more than 75% of the surface of the Earth. While much of it is in the oceans, lakes and rivers also contain a lot of water. Freshwater lakes are home to a vast array of organisms, including ...frogs and water bugs. Water bugs are sometimes called water skaters or water striders because they can walk across the water's surface. If a water bug can walk across the water, why can't a frog?
In order to answer this question, we need to know a lot more about the properties of water. A molecule within a sample of a liquid is attracted equally in all directions by other molecules, so there's no net force on the molecule in any direction..."
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January 18, 2010 at 02:17 PM
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