Before Watching
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Avalanche researchers need to be concerned with a wide range of
variables including the kind of snow that falls (such as light,
dry, or wet), and the cumulative layering of snow on any
hillside. As they watch the program, have students develop a
list of properties of snow, the kind of environmental factors
that might shape how layers of snow pack together, and the kinds
of snow that fall.
After Watching
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Have students continue discussing the characteristics and
properties of snow and how scientists use this information in
avalanche research. What kinds of environmental factors might
influence how layers of snow fall? What kinds of snowpack layers
indicate an area is at high risk for avalanches? How do people
who have seen or been caught in avalanches describe how the snow
changes before, during, and after an avalanche?
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