This short video regarding the ecosystem of the rain forest describes the three layers of the rainforest and ends with the startling conclusion that man's deforestation activities may actually cause the demise of rain forests by the year 2050. For third-graders and older.
Redwood Forest Facts
There are three main species of redwood trees, including the
coastal redwood, the giant sequoia and the dawn redwood. Learn about coastal redwoods, which can grow to more than 350 feet tall with help from a science teacher and field biologist in this video.
The Greenhouse Effect
A simple animation explaining the greenhouse effect. The video shows what a "perfect" world would work and how the green house effect works. Run time 01:47.
Solar Energy Concentrator
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 radiant, heat, chemical and kinetic energy are given.
Includes links to directions for constructing a simple solar concentrator.
Using Cloud-Seeding (Geo-Engineering) to Solve Global Warming
This clip from the "Five Ways to Save the World" details a cheap, simple, and low-risk way to compensate for global warming.
If the reflectivity of clouds could be increased slightly, sufficient sunlight would be reflected to compensate for any future release of CO2 into the atmosphere. (09:37)
Science Fair Project (Hot Ice)
This is a brief video of a school science fair project that won first place. Sodium Acetate was used in the project to create "hot ice", a liquid substance that instantly turns solid when touched. The video is set to music with brief descriptions written on the screen. No narration or explanation provided. Explanation: The reaction is exothermic and is often found in hand warmers. Run time 03:14.
A History of Flying
Video on flying airplanes with some science and history used.
Climb and Descent - Lesson 7
This NASA video segment explores how Newton's laws apply to the takeoff of an airplane. Viewers watch an instructor and engineer at NASA's National Test Pilot School and learn that there are four opposing forces on an airplane, that takeoff is the point at which the lift just starts to offset the weight, and that the distance needed for takeoff can be calculated using an equation derived from Newton's second law. The video clip also discusses the extra drag force created by the rolling friction
Faraday's Experiment - Elementary Science
This is a short, animated narrated video (02:35) that offers an overview of Faraday's Experiment. Some of the narration is accompanied by English captions.
Work/Energy Problem with Friction
A conservation of energy problem where all of the energy is not conserved. This video, which is suitable for high school students, starts with a black screen because the instructor, in his conversational tone, uses it as a 'chalkboard.' Instructor uses different colors for clarification. Run time 10:04.
Nuclear Power - How it Works
This excellent seven-and-a-half mini-documentary shows through narration and computer animation how a nuclear generating station works.
The Ant And The Dove, a fable by Aesop
This is a cartoon animation of one of Aesop's fables, The Ant And The Dove. The moral of the story is one good turn deserves another. The dove helps the ant that is struggling for life. The ant in spite of bring small, comes to the dove's help at a crucial moment. As the reader recites the words, text appears at the bottom of the screen. Narrated by a man with an Indian accent; with music. (3:30)
Grandma's Tales from India: Krishna's Strange World Timeless, treasured animation stories that generations of Indian children have grown up with and loved. These stories end with a moral and are pearls of wisdom and learning. (27:45)
Timeless, treasured animation stories that generations of Indian children have grown up with and loved. These stories end with a moral and are pearls of wisdom and learning. (27:45)
Norse Mythology: The Gods of Asgard
Video discusses Thor and the defender of Asgard. He had four items to help him protect Asgard. The best known and most feared was the war hammer called Mjollnir, The Destroyer. Next to Thor in strength was Vidar. The guardian of Asgard was Heimdall, not much is known about his origins. The war god is also discussed: Tire, was braver than Thor but not as powerful. Baldur was the brother of Thor and was considered the beautiful god. Hodur, the blind god
Daisy Zamora reads "Mother's Day"
Filmed at the Geraldine R. Dodge Poetry Festival, this video features Daisy Zamora reading her poem Mother's Day. The video is narrated by Garrison Keillor.
How Does Hail Form
Hail forms with an uplift that involves air rising, cooling and
condensing as the temperature goes down. Discover how hail can get
larger through winds that pick it up and coat it with more ice with help
from the chair of a department of environmental studies in this 1:30 video. Good graphics.
Learn English Through Song - Reported Speech
Learn reported speech from the lyrics of the song Love Potion Number Nine by the Clovers. Learn English Through Song helps English Second Language (ESL) students study speaking, conversation,
vocabulary, pronunciation, listening and grammar. More songs at www.learn-to-speak-english-esl.com
Learn to Speak French : Numbers 21 to 100
Suitable for all beginning French-language learners.
Personal Computer Mouse Care & Cleaning Tips
Watch an expert demonstrate some great tips on cleaning the computer's mouse in this free how-to video on cleaning personal electronics. This video shows how to clean both types.
The Genius of Archimedes - Part 3
NOVA explores Archimedes' rare writings, as well as the book's mysterious beginnings, tumultuous history and amazing discovery. As the ancient text comes back from the dead, it unlocks its revolutionary contents—the infinite secrets of one of history's greatest thinkers. (Part 3) Run time 08:26.