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Not Right For WatchKnowLearn
Ages: 11 - 18
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Invasive species cost the global economy over a trillion dollars each year. Find out how these non-native organisms are introduced into an ecosystem, how they impact local communities, and which measures can be taken to help prevent the introduction ...of invasive species. (03:31)
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December 28, 2019 at 09:45 AM
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Not Right For WatchKnowLearn
Ages: 9 - 18
2555 Views:
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Two puppies are found abandoned in a dump. Both dogs are in need of serious medical attention. This short, profession video is part of a series on dog behaviors aired by National Geographic. (02:11)
March 27, 2009 at 08:51 AM
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Not Right For WatchKnowLearn
Ages: 12 - 18
3911 Views:
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Mark Twain or Samuel Langhorne Clemens (real name) was an
American author and humorist. Twain is most noted for his novels
Adventures of Huckleberry Finn, which has since been called the Great American Novel, and The Adventures of Tom Sawyer. He is... extensively quoted. During his lifetime, Twain became a friend to presidents, artists, industrialists, and European royalty. (10:01)
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January 12, 2010 at 02:44 PM
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Not Right For WatchKnowLearn
Ages: 14 - 18
3840 Views:
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This clip from America Revealed explores the profession of air traffic control. We learn about the scope and magnitude of the FAA as well as the importance of the jobs. (03:26)
January 14, 2013 at 10:19 AM
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Not Right For WatchKnowLearn
Ages: 10 - 18
3224 Views:
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Learn about Newton’s First Law of Motion with two examples shown. Plus, I snuck in some free body diagrams and subtle hints at Newton’s Second and Third Laws as well. Thank you so much to Mrs. Zeller for being a Flipping Physics Correspondent!
Want... Lecture Notes?
Content Times:
0:08 Newton’s First Law of Motion
0:34 1st Example: Mrs. Zeller presents an object at rest
1:08 What does it mean “No net external force acting on the rock”?
2:20 2nd Example: An object in motion
3:21 What does “constant velocity” mean?
4:00 Also called the Law of Inertia
4:22 The two most common mistakes students make
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Next Video: Introduction to Newton's 2nd Law with Example Problem
Previous Video: The Reality of our first Free Body Diagram
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Picture Credit: http://commons.wikimedia.org/wiki/File%3AIsaac_Newton%2C_English_School%2C_1715-20.jpg
Attributed to 'English School' (Bonhams) [Public domain], via Wikimedia Commons
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June 1, 2015 at 12:52 PM
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Not Right For WatchKnowLearn
Ages: 9 - 16
4434 Views:
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This video demonstrates how solar energy can be focused with a curved mirror. Once focused this energy can be used to cook food, sterilize water even create electricity. Includes an explanation of energy, power, joules, and watts. Examples of radian...t, heat, chemical and kinetic energy are given. (06:10)
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December 6, 2009 at 07:34 PM
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