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Avalanches

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Most avalanches occur in January through March, but have been recorded for every ... an avalanche such as weather, temperature, slope steepness, slope direction ... – PowerPoint PPT presentation

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Title: Avalanches


1
Avalanches
  • By JMS
  • And
  • J D F

2
What Is An Avalanche
  • An avalanche is a big pile of snow falling down
    an area of the mountain.
  • Sometimes a large avalanche can release 300,000
    cubic yards of snow per avalanche.

3
When an Avalanche Occurs
  • Most avalanches occur in January through March,
    but have been recorded for every month of the
    year.
  • May and June have also been known to kill people
    revealing the danger of spring avalanches.
  • 90 of avalanches occur during a snowstorm.

4
How Does An Avalanche Happen
  • Many factors can cause an avalanche such as
    weather, temperature, slope steepness, slope
    direction (weather it is facing north, south,
    east, or west), wind direction, ground, and
    vegetation.
  • When snow freezes on the mountain more and more
    snow comes and freezes on top of that until the
    temperature rises so that the snow melts causing
    an avalanche.

5
Prevention or Protection
  • Look out for cracks running across the snow.
  • To get out of the way of an avalanche run to the
    side of the mountain.
  • Use swimming motions to get yourself farther to
    the surface. If youre near the surface, put an
    arm of leg out of the snow so rescuers can find
    you
  • Push snow away from your face so you have enough
    room to breath.

6
Work Cited
National Snow And Ice Data Center http//nsidc.org
/snow/avalanche/ANATOMY http//nsidc.org/snow/ava
lanche/WHEN http//nsidc.org/snow/avalanche/FACT
ORS Information
Sportscotland Avalanche Information
Service http//www.sais.gov.uk/about_avalanches/ I
nformation
Pictures came from clip art
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