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Ages: 12 - 18
What makes up a Neutron?
From YouTube
Find out what a neutron is in this video.  Neutrons are composed of two down quarks and one up quark.  The overall charge of a neutron is neutral.  See a proposed visual model of a neutron in this high quality video. (01:20)
Found by Anonymous in Particles
December 7, 2009 at 08:35 PM
Not Right For WatchKnowLearn
Ages: 10 - 18
Global Warming 101
From nationalgeographic.com, produced by National Geographic
A three minute review of the causes of global warming. Good images and graphics. Shows evidence of warming in terms of temperatures and ice melting shown. Run time 03:03.
October 12, 2010 at 07:49 PM
Not Right For WatchKnowLearn
Ages: 10 - 18
The Crash of the Hindenburg (4)
From classroomclips.org
Finally, the crash occurs in New Jersey. Professional video with narration, film, and slides of the crash.
May 21, 2010 at 11:17 AM
Not Right For WatchKnowLearn
Ages: 11 - 18
Introduction to Cellular Respiration - Khan Academy
From YouTube, produced by Salman Khan
The instructor uses software (and several colors for clarification) to offer an introduction to cellular respiration, glycolysis, the Kreb's Cycle, and the electron transport chain. !14:19)
February 9, 2010 at 08:35 PM
Not Right For WatchKnowLearn
Ages: 6 - 18
Learn About Chinese New Year: Rituals, Food, Family
From watchmojo.com, produced by WatchMojo
This 3:22 long video explains that the Chinese New Year is based on a myth that involved a monster eating crops and people from Chinese villages. The population was finally able to drive the monster away due to his fear of the color red, and by leavi... [more]
Found by freealan in China
March 6, 2012 at 08:41 PM