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it lasted for 5 minutes! alot can happen in a matter of secounds!! on one of the question they put48 hours!! WHAT!! Answer: 5 minutes :)

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13y ago
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9y ago

Mount St. Helens is about 40,000 years old.

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11y ago

It was considered dormant for 123 years before erupting again.

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12y ago

mount saint helens was active for 670,000 million years

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12y ago

Mt.St. Helens usally erupt every 100 years or more. Sometime less.

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15y ago

sdfgsd dfsgsdfgdfyes

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Q: How long was mount saint Helens inactive for?
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Related questions

For how long had mount st helens been inactive?

123 years


How long would it take to hike mount st helens?

how long would it take to hike mount st Helens


How long has mount St Helens been formed?

Penis


When is mount saint helens going to erupt again?

Scientists are unsure about this. Some are predicting that it's going to happen soon and others think it's not going to happen for a long time.


What is a volcano that hasn't erupted in a long time and is unlikey to erupt again?

An extinct volcano has not had an eruption for at least 10,000 years and is not expected to erupt again in a comparable time scale of the future


How far away is the Columbia river from Mount St Helens?

Mount St. Helans is aproximatly 120km or 75 miles away from the pacific ocean.


How long did it take to rebuild the towns that were burnt down by the mount St. Helens eruption of 1980?

1 second


Has there ever been a volcano in THE USA?

Yes, there are several volcanoes in the western United States. Also, the state of Hawaii consists of volcanoes.


Why did mount st helens go boom?

Pressure inside the earth caused the explosion aftera long build up.


How long did it take for mt saint helens to form?

Mount St. Helens began forming around 40,000 to 50,000 years ago after a series of eruptions that built up the edifice. The volcano was an active part of the Cascade Range until its catastrophic eruption in 1980. However, the actual formation process spanned thousands of years.


What kind of animals live in munt saint helens?

Not all of animals. One is the cariboe. It hangs around, but not for long. Mountain goats are usually spotted there.


What are Oregon's Historical Sites?

There are many stops from the Oregon Trail that are historical sites. There is also Mount St. Helens which was a volcano that erupted not too long ago.