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Thunderstorm (0)

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Thunderstorm
By: Pille Leesmäe
What is a thunderstorm?
• A thunderstorm is
storm  with thunder  and 
lightning  and  typically  
heavy rain or hail.
Different  types of thunderstorms
Single -cell
• Typically  less  than  a couple of  miles   across
• Short lasting
Multi-cell clusters
• May last for  several hours  and move  hundreds of miles
Supercells
• Single, large storm 20-40 km across
• Last for hours
Supercell
What  causes thunder?
• Thunder is caused by lightning. When a lightning 
bold  travels from the  cloud  to the  ground  it 
actually opens up a  little  hole in the air.
   When the  light  is gone the air collapses back 
and creates a sound  wave  that we  hear  as 
thunder
What to do  during  a thunderstorm?
• In a forest:  seek  shelter in a low area under thick 
growth of  trees .
•  Avoid using electrical appliances, unplug  them
• Do not thake baths or showers during storms
Some interesting facts
•  Death  rate in the US: 1700 injuries per  year . 300 lightening 
injures.
•  At any  given  time  approximately  2,000 thunderstorms are 
occurring on Earth.
• About 10% of lightning  strike  victims are  killed ; 90% survive
However , many survivors suffer from long lasting 
disablilities.

Document Outline



  • Slide 1

  • What is a thunderstorm?

  • Different types of thunderstorms

  • Supercell

  • What causes thunder?

  • What to do during a thunderstorm?

  • Some interesting facts


Vasakule Paremale
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Aeg2018-02-13 Kuupäev, millal dokument üles laeti
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Autor PilleLeesmae Õppematerjali autor

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