2. Avalanche
• Occurs when a large amount of
snow travels down a slope
• Two components of an
avalanche; snow filled slope and
a trigger
• Powerful enough to snap trees
http://www.pbs.org/wgbh/nova/avalanche/elements.html
and destroy buildings
• When over, snow sets up very
compact making rescue difficult
• Caused more deaths in U.S.
than earthquakes
3. Earthquake
• Occurs when two plates shift or slide past
each other
• Plates touch at points called faults
• Focus- the point at which an earthquake
begins
• Epicenter- point right above the focus
where earthquake causes most movement
4. Hurricane
• A tropical cyclone with
winds of 74 mph or greater
• It takes days or weeks to
gather the strength to be
considered a hurricane
•
