Restless Earth - Mt St Helens Flashcards
1
Q
What is Mt St Helens the case study for?
A
MEDC volcanic eruption
2
Q
What state is Mt St Helens in?
A
Washington
3
Q
What plates are involved in Mt St Helens and what type of plate boundary is it?
A
Destructive plate boundary: Juan de Fuca Plate is subducted under the North American plate
4
Q
When did Mt St Helens erupt?
A
18th May 1980
5
Q
What were the primary effects of Mt St Helens?
A
- 61 deaths
- 10 million trees destroyed
- Spirit Lake was filled in with ash and mud
- Floodwaters washed away several roads and railway bridges
- Electricity supplies were interrupted
- Ash circle the world
6
Q
What were the secondary effects of Mt St Helens?
A
- Businesses destroyed - farming, logging camps and fisheries
- Ash in the atmosphere affected weather in the UK
7
Q
What were the short-term responses of Mt St Helens?
A
- Evacuation of the area before the main eruption, prediction of the area was not completely accurate
8
Q
What were the long-term responses of Mt St Helens?
A
- Rebuilding
- 10 million trees replanted
9
Q
A
