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How the Earth Was Made: Mount St. Helens

44 minutes 50 seconds

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Still image from How the Earth Was Made: Mount St. Helens

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

Steeply sloping walls of layered, red sedimentary rock. Caption: the Grand Canyon remains the most famous of them all.
How the Earth Was Made
Season 2 / Ep 1
44 minutes 1 seconds
Grade Level: 9 - 12
A volcano emits ash and smoke, as seen from a city street. Caption: (narrator) It's the nightmare scenario that everyone fears.
How the Earth Was Made
Season 2 / Ep 2
44 minutes 1 seconds
Grade Level: 9 - 12
Molten, glowing sphere being pelted by rocks. Caption: was the fledgling Earth.
How the Earth Was Made
Season 2 / Ep 3
44 minutes 3 seconds
Grade Level: 9 - 12
Sand dunes. Caption: The wind that builds them also blows them away,
How the Earth Was Made
Season 2 / Ep 4
44 minutes 51 seconds
Grade Level: 9 - 12
A rocky sheer cliff with a river cascading down the face of it, as seen from above. Caption: is shaping this magnificent landscape.
How the Earth Was Made
Season 2 / Ep 5
44 minutes 21 seconds
Grade Level: 9 - 12
Illustration of a plate of Earth's crust being pushed beneath a second plate. Caption: (narrator) As the two plates moved towards each other,
How the Earth Was Made
Season 2 / Ep 6
44 minutes 1 seconds
Grade Level: 9 - 12
Lava shooting into the air. Caption: pouring out of volcanoes all around the Ring of Fire.
How the Earth Was Made
Season 2 / Ep 7
44 minutes 1 seconds
Grade Level: 9 - 12
Tall, snowy, and rocky mountain as seen from below. Caption: Is Everest shrinking or growing?
How the Earth Was Made
Season 2 / Ep 8
44 minutes 1 seconds
Grade Level: 9 - 12
Several volcanoes oozing lava and emitting smoke. Caption: They were pushed back by these mountains of fire.
How the Earth Was Made
Season 2 / Ep 9
44 minutes 1 seconds
Grade Level: 9 - 12
Lava field in foreground with evergreen trees and snowy mountain in background. Caption: Southwest of St. Helens, he investigates an area
How the Earth Was Made
Season 2 / Ep 10
44 minutes 50 seconds
Grade Level: 9 - 12