Learn how the ocean relates to weather and climate in this video from NASA. Uneven heating from the Sun drives ocean and atmospheric circulation. Animations and satellite data show how ocean currents and eddies distribute energy and nutrients around the world. Heat exchanges between the ocean and th
Why Doesn't the Moon Fall Down?
Astronomer Doris Daou explains how the forces of speed and gravity keep the Moon in a constant orbit around Earth in this animated video segment adapted from NASA. The Moon, Earth's natural satellite, seems to hover in the sky, unaffected by gravity. However, the reason the Moon stays in orbit is precisely because of gravity -- a universal force that attracts objects. With the right combination of speed and gravity, satellites can fall around, instead of into, the body that they orbit. In this animated video segment adapted from NASA, learn about how the Moon stays in orbit around Earth. This video is available in both English and Spanish audio, along with corresponding closed captions. CREDITS: https://www.pbslearningmedia.org/credits/ess05.sci.ess.eiu.moonorbit/ LICENSE: https://www.pbslearningmedia.org/help/full-license-for-section-3c-of-terms-of-use-download-and-share/
More videos by this producer
In this video from the ICT Center, learn about the index of refraction and Snell's law. Review a simple example of refraction, the speed of light in materials and the formula for calculating the index of refraction. Explore a table of the refractive indices of common media and materials used in fibe
Hear how a research assistant got her start in biotechnology — Sandra fell in love with science during her certificate program in Boston, Massachusetts. The video details not only Sandra's cutting-edge research work — using nanotechnology, rather than needles, to deliver vaccines — but also the qual