See how models—both physical and virtual—help scientists understand the mechanisms that affect the mobility and severity of landslides in these videos from NOVA and USGS. In a landslide, a large mass of earth, rock, and debris moves down a slope. Flume experiments uncover how water interacts with soil and how soil structure contributes to the mass movement and liquefaction of earth. A computer simulation shows the time and spatial scale of the unusually mobile landslide that devastated Oso, Washington, in 2014.
To view the Background Essay and Teaching Tips for this media gallery, go to Support Materials below. This resource was developed through WGBH’s Bringing the Universe to America’s Classrooms project, in collaboration with NASA. Click here for the full collection of resources.
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