The theory of how the Grand Canyon was formed is shown in this animation from NOVA, and features rare footage of a phenomenon known as debris flow. CREDITS: https://www.pbslearningmedia.org/credits/ess05.sci.ess.earthsys.canyon/ LICENSE: https://www.pbslearningmedia.org/help/full-license-for-secti
Learn how the analysis of rock layers and ocean sediments supports the theory that rapid climate change may have jump-started human evolution two million years ago in this video from NOVA: "Becoming Human". CREDITS: https://www.pbslearningmedia.org/credits/clim10.sci.ess.watcyc.evoclimate/ LICENSE
Explore how the position of the Sun in the sky affects shadows on Earth’s surface in this live-action video from PEEP and the Big Wide World. Use the video to observe evidence of the relationship between the Sun and shadows and to describe how the position of the Sun in the sky results in changes in
Learn how drip irrigation helps conserve water as compared with traditional irrigation methods in this video from the California Academy of Sciences. This resource stimulates students’ thinking about protecting this limited resource. Students can ask questions, develop a model, and make evidence-bas
Solar eclipses result from the alignment of the Sun, Moon, and Earth. Total solar eclipses — in which the Sun is completely blocked by the Moon — are a spectacular and rare sight to witness. In this animation adapted from NOVA, see why solar eclipses occur and observe a simulated total eclipse. This
Launched in September 2011, find out about the Gravity Recovery and Interior Laboratory (GRAIL) mission to measure the gravitational field of the Moon and study how the Moon developed over time. Animations illustrate technical aspects of the mission's design, including the launch, orbital insertion
Warm water fuels the tropical storms that ultimately form hurricanes. In this video segment adapted from NASA's Goddard Space Flight Center, learn how El Niño events—climatic anomalies that occur periodically in the Pacific Ocean—alter the course of atmospheric circulation and lessen hurricane forma
Discover what happens during a lunar eclipse in this video from NASA. The orbit of the Moon around Earth causes the monthly phases of the Moon; lunar eclipses occur when the Moon passes through Earth's shadow. The video shows how the appearance of the Moon changes as it passes through Earth's penumb
Since its launch is 1990, the Hubble Space Telescope has provided scientists with a vast amount of quality data and has contributed to a number of important discoveries. One of the best-known images — the Hubble Deep Field — shows some of the earliest and faintest galaxies ever seen. In this video s
It's remarkable to think that a compound renowned for its safety and stability in commercial products could have dramatically compromised the health of our planet, but that's just what chlorofluorocarbon (CFC) has done. This video segment adapted from NASA's Goddard Space Flight Center describes how
Interactions between Earth's atmosphere and oceans drive weather and climate patterns. Although these interactions and patterns are complex, they are also predictable. This animation from The New Media Studio explains precipitation patterns by illustrating how differences in ocean surface temperatur
In the early 1900s, most geologists thought that Earth's appearance, including the arrangement of the continents, had changed little since its formation. This video segment, adapted from the "Earth Explorer" episode of Discovering Women, describes the impact the theory of plate tectonics has had on
