How the Earth Was Made: Mount St. Helens
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Browse Full-length Non-member Titles![Lava field in foreground with evergreen trees and snowy mountain in background. Caption: Southwest of St. Helens, he investigates an area](https://org-dcmp-staticassets.s3.us-east-1.amazonaws.com/posterimages/6808_1.jpg)
As shown on the History Channel. Over 20 years ago, Mount St. Helen's--thought to be dormant--shocked America when it exploded. It is an acidic volcano--the magma beneath is full of volatiles making it highly explosive. A new plug has formed in its throat and is rising. When it blows, it will be like uncorking a champagne bottle, releasing pressure below and allowing dissolved gases to escape and explode. The question is, When will it blow again?
Media Details
Runtime: 44 minutes 50 seconds
- Topic: Geography, Science
- Subtopic: Geology, U.S. Geography
- Grade/Interest Level: 9 - 12
- Standards:
- Release Year: 2010
- Producer/Distributor: A & E Television Network
- Series: How the Earth Was Made
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How the Earth Was Made: Mount St. Helens