|
Featured Videos
|
|
Not Right For WatchKnowLearn
Ages: 9 - 16
4422 Views:
|
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)
[more]
December 6, 2009 at 07:34 PM
|
|
|
Not Right For WatchKnowLearn
Ages: 14 - 18
4799 Views:
|
Hank fills us in on the endocrine system - the system of glands which produce and secrete different types of hormones directly into the bloodstream to regulate the body's growth, metabolism, and sexual development, and function. (11:20)
September 22, 2012 at 09:59 AM
|
|
|
Not Right For WatchKnowLearn
Ages: 7 - 18
4913 Views:
|
In this edition of "Ask Dirk," KCRA 3 WeatherPlus Meteorologist Dirk Verdoorn explains how rain forms. A 'water cycle' experiment is set up with a tea kettle and a metal plate. The viewer can see that evaporation changes to condensation, then changes... to rainfall with this simple experiment. The video is slightly blurry. (04:06)
[more]
July 1, 2010 at 06:11 PM
|
|
|
Not Right For WatchKnowLearn
Ages: 3 - 7
4558 Views:
|
In this video, a librarian sings a song called "Up, Down" which is well-suited to babies and young toddlers. (01:00)
August 19, 2009 at 04:18 PM
|
|
|
Not Right For WatchKnowLearn
Ages: 7 - 18
5517 Views:
|
This 3:25 video provides good images and data about the history of this island/country. It does a good job of briefly telling the background to the city and does show some significant modern buildings. Not much depth, and is best when dealing with ea...rly history.
[more]
November 20, 2011 at 11:22 AM
|
|
|
Not Right For WatchKnowLearn
Ages: 9 - 18
3569 Views:
|
Every spring, a series of epic battles are fought in the waters off America's west coast. It's the season when killer whales hunt their largest prey — gray whales that are migrating up the coast. (03:41)
January 4, 2013 at 08:23 PM
|
|