Mount St. Helens

2000 houses weree killed or bulldozed :( :O

Before the 1980 eruption of Mt. St. Helens, scientists thought that the bulge on the side of the mountain was a result of magma intruding into the volcano, causing the north flank to swell. They were monitoring the bulge, but did not anticipate the scale of the eruption that eventually occurred.

Mount St. Helens formed through volcanic activity associated with the subduction of the Juan de Fuca tectonic plate beneath the North American plate. Eruptions built up the volcano over time, and its iconic cone shape developed from layers of lava, ash, and other volcanic materials. The catastrophic eruption in 1980 resulted in the mountain losing its peak and drastically changing its landscape.

The cost to visit Mount St. Helens varies depending on the activities you choose. Entrance fees to the Mount St. Helens National Volcanic Monument are $25 per vehicle for a 7-day pass. Additional costs may include guided tours, camping fees, and any recreational activities you decide to partake in.

No, Mount St. Helens is not an intrusive volcano. It is a stratovolcano, which is formed from explosive eruptions of viscous lava, ash, and other volcanic materials. An intrusive volcano forms when magma solidifies below the Earth's surface.

Yes, many times.
Most recently prior to 1980 was a 57-year eruptive period that started in 1800 was named after the Goat Rocks dome, and is the first time that both oral and written records exist of Mount Ste. Helens erupting.

Yes, the eruption of Mount St. Helens in 1980 caused major environmental damage, including the destruction of forests, rivers, and wildlife habitats. It also led to the loss of plant and animal species, as well as significant changes to the landscape that took years to recover from.

Magma rises through fractures from beneath the crust because it is less dense than the surrounding rock. When the magma cannot find a path upwards it pools into a magma chamber. As more magma rises up below it, the pressure in the chamber grows.

Mount St. Helens was created by the interactions of the North American plate and the Juan de Fuca plate. The Juan de Fuca plate is an oceanic plate, made of material which is denser than continental plates, such as the North American plate. The Juan de Fuca plate and the North American plate are currently moving towards each other, and Juan de Fuca plate is going underneath the North American plate because it is denser. This allows for magma to come to the surface, and it creates a volcano.

In the event of an emergency at Mount St. Helens, authorities may issue evacuation orders, warnings, or closure of access roads. Visitors are advised to follow instructions from park rangers, monitor local news and weather reports, and be prepared to evacuate quickly if necessary. It is important to have an emergency kit with essentials such as food, water, first aid supplies, and a communication device.

The Mount St. Helens eruption occurred in Washington state, in the western United States.

yellow stone is a supervolcanowhereas mount saint helens isnt... yellowstone is 1000 times more powerful than mount saint helens which is 2500 times smaler. as yellow stone is a supervolcano and it emmited 240 cubic miles of rock, this means a supervolcano like yellow stone if it erupts can change the temperature of the earth as the debris released blocks the sunlight...potentially causing an iceage with global consuqunces... mount saint helens cant do this and will just cause damage to the place it arupted in the US...

Mount St. Helens is a volcano located on land in Washington state, USA. It is part of the Cascade Range of mountains.

Mount St. Helens takes its English name from theBritish diplomat Lord St Helens, a friend of explorerGeorge Vancouver who made a survey of the area in the late 18th century.

The 1980 eruption of Mount St. Helens destroyed an estimated 4 billion board feet of timber, equivalent to around 2.5 billion trees. However, not all of these trees were killed; some survived, and new vegetation has since grown in the area.

Washington is the state home to Mount St. Helens. The volcano erupted in 1980, causing significant destruction and reshaping the landscape of the area. It is considered a semi-active volcano, with continued monitoring for potential future activity.

It is not uncommon for volcanoes to erupt every year, someplace in the world. Two countries that have volcanoes that erupt from time to time are the United States and the Philippines. Other countries include El Salvador, Iceland, and Africa.

The eruption of Mount St. Helens in 1980 lasted for 9 hours

People use Mount St. Helens for recreational activities such as hiking, camping, and climbing. It is also a popular tourist destination for sightseeing and learning about the 1980 eruption and the subsequent recovery of the ecosystem. Scientists study the volcano to better understand volcanic activity and monitor for signs of potential future eruptions.

Yes, life has slowly returned to the area affected by the 1980 eruption of Mount St. Helens through natural processes like plant growth and animal migration. The ecosystem is actively recovering and continues to thrive despite the initial devastation.

Another name for volcanic mud flows is lahars. They are created when a volcanic eruption melts snow and ice, mixing with ash and debris to form fast-moving mudflows that can travel long distances.

Mount St. Helens has an altitude of 2 550 m.

The mailing address of Mt. St. Helen's volcanic monument is Mount St. Helen's National Volcanic Monument 42218 N.E. Yale Bridge Rd. Amboy, WA 98601 according to Mount St. Helen's National Park.

In addition to earthquakes, floods, and mudslides triggered by eruptions at Mount St. Helens, secondary events can include lahars (mudflows), pyroclastic flows, ash fall, and gas emissions. These events can impact surrounding areas, infrastructure, and ecosystems, posing hazards to human health and safety. Emergency response efforts typically involve monitoring, evacuation plans, and communication to mitigate risks and protect affected populations.

The 1980 eruption of Mount St. Helens killed 57 people.