Case Study: Mount St Helens

Here is a powerpoint about Mount St Helens, perfect as a case study. I hope this helps you to revise! Please rate and comment on how to improve :)

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What happened?

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Mount St Helens was dormant for
123 years...

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Volcanic activity had been building
th
since 20 March, an earthquake of
4.0 was recorded. The volcano was
being monitored carefully...

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th
27 March, there was a small
eruption of steam and gas...

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A huge bulge appeared on the
North side of Mt. St. Helens by
May. The bulge grew 1.5m a day.

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