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There are 8 videos in this category and 0 videos in 0 subcategories.
Category Videos
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Not Right For WatchKnowLearn
Ages: 12 - 18
7944 Views:
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To avoid accidents, this experiment should be done by teachers in front of students, not by the students themselves. This is a great way to show students that carbon dioxide gas is heavier than air. It also helps them understand the unusual natural d...isaster at Lake Nyos in Africa. In 1986 a tremendous amount of carbon dioxide gas erupted from the lake, and then flowed down through a village, killing 1,700 people. The video is a narrative, step-by-step demonstration with explanations. (03:59)
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November 24, 2008 at 10:53 AM
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Not Right For WatchKnowLearn
Ages: 11 - 18
4557 Views:
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In this video, Mr. Edmonds goes through all the steps to find the density of an irregular solid object. Some of the key vocabulary words include the following: irregular object, density, mass, grams, balance, volume, and graduated cylinder. This is a... great resource to help your students remember the steps of finding the density of an irregular solid objects. Middle School and High School Students will enjoy this catchy, fun tune. (02:52)
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September 24, 2011 at 10:08 AM
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Not Right For WatchKnowLearn
Ages: 14 - 18
3561 Views:
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Join award winning teachers Jonathan Bergmann and Aaron Sams as they interactively teach Chemistry: 1.1: Properties of Matter. Intensive Vs. Extensive properties are explained. (04:41)
October 24, 2011 at 06:31 PM
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Not Right For WatchKnowLearn
Ages: 11 - 18
10662 Views:
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Mr. O from the Children's Museum in Houston explains density. He also includes a simple experiment at the end of thevideo. The video moves rapidly and may have to be stopped to allow the teacher to check for understanding. (04:20)
February 12, 2012 at 07:56 PM
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Not Right For WatchKnowLearn
Ages: 10 - 18
5927 Views:
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Video showing how to layer liquids using honey, dish soap, water, vegetable oil, and rubbing alcohol. No explanation of why (different densities of liquids), but clear directions for "how to." Demonstration set to music. (02:15)
July 12, 2009 at 09:28 AM
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Not Right For WatchKnowLearn
Ages: 7 - 13
4314 Views:
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When water freezes, it expands and becomes less dense. This means that there is the same number of particles taking up more space. Since the ice cubes are less dense than the water, they float! As an ice cube melts, its volume changes, but its weight... is conserved (law of conservation of mass). So, the melted water has exactly the same weight as the water it displaced as an ice cube the water level stays the same! (00:44)
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February 24, 2011 at 07:58 PM
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Not Right For WatchKnowLearn
Ages: 8 - 14
3750 Views:
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This video provides an interesting experiment to teach kids about density. A student shows how to experiment with density using a water bottle and various liquids. An explanation is provided by the student (06:52)
July 27, 2009 at 08:18 AM
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Not Right For WatchKnowLearn
Ages: 10 - 18
3375 Views:
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This video demonstrates an experiment on how temperature affects density. Two baby food jars are used. One jar is filled with cold water and colored blue. The other jar is fillled with warm water and colored yellow. First a thin piece of plastic is p...ut on top of the cold water, then the cold water jar is put on top of the warm water jar...showing that both the colored warm and cold water mix to make green. The process is repeated with the warm water being placed on top of the cold water. The experiment shows that the warm water doesn't mix with the cold because it is less dense. (01:57)
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November 27, 2010 at 09:24 AM
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