by frances robson. who? avalanches are dangerous to people who stay near the mountains like......
TRANSCRIPT
AVALANCHESBy Frances Robson
Who?Avalanches are dangerous to people who stay near the
mountains like...
People who ski in the mountains
Who?Avalanches are dangerous to people who stay near the
mountains like...
People who hike in the mountains
Who?Avalanches are dangerous to people who stay near the
mountains like...
People who live in the mountains
What? What causes an avalanche?
• heavy snowfall
• deforestation (because of new ski runs) making the slope less stable
• steep slopes, this helps to increase the speed of movement
• vibrations (earthquakes)
• layering of snow, where snow is already on the mountain and has turned into ice, and then fresh snow falls on top which can easily slide down
Where? Some kinds of disasters are more common in
some places than in others... areas with mountains throughout arctic
regions which have high slopes are at risk. The avalanche problem is more severe in Europe than North America because of the higher population in the Alps mountain range
Areas at high risk for avalanches
THE HIMALAYASTHE ALPS
How?
Disastrous avalanches happen when large slabs of snow break free from a mountainside and shatter as they slide downhill.
Did you know...
These moving slabs
can reach 80 miles
(130 kilometres) per
hour within five
seconds!
Examples of avalanches
Page on Himalayan avalanche(Sunday 23rd September 2012)
How do avalanches link to global warming?
Big Avalanches
Deforestation. Because the trees stop the avalanches but if they are cut down not only do the avalanches become more dangerous but also more Carbon Dioxide is released into the air.