Mount St Helens Flashcards
How many deaths was there as a result of the Mount St Helens eruption?
61
How many trees were destroyed as a result of the Mount St Helens eruption?
10 million
What other effects were there to the local environment? (3)
Spirit lake completely filled in by debris.
Every tree within a 2.5km radius was destroyed.
Created a 3km long and 0.5km deep crater on the volcano.
What was the effect on Yakima, a town 120km away from the eruption?
They had to wear gas masks because of the ash that drifted there
What was the result of the ash released on the local area?
The sky was black because the ash blotted out the sun
What triggered the eruption?
An earthquake measuring a 5 on the Richter scale
What was the main cause of the deaths?
Poisonous gases
What year was the Mount St Helens eruption?
1980
