Mount St. Helens
Volcanoes are shaped like mountains, but they eject lava due to tectonic activities beneath the Earth's surface. This can result in eruptions, depending on the intensity and the type of volcano, and cause damage.
Asked in Volcanoes
Can you stop a volcano from erupting?
No, volcanic eruptions are due to the movement of BIG pieces of land beneath the earths surface called tectonic plates. It is good that these plates move, because it indicates that this planet is a "live planet". planets on which tectonic plates do not move are considered "dead planets". If a volcano is going to erupt near you, the best thing to do is to get away from the volcano. ...
Asked in Volcanoes
How does a volcano erupt?
A volcano erupts when pressure on the magma chamber causes the magma to rise and come out together with gas, rocks and ashes. The violence of an eruption depends on how much pressure the volcano is under before it erupts. Volcanoes are caused to erupt when the inner core of the earth holds more pressure or heat inside it. Volcanoes are the outside source of releasing the lava and magma that the earth has inside it. When a volcano erupts it means...
Asked in Volcanoes, Plate Tectonics
How will the angle at which an oceanic plate subducts affect the distance from the volcanic arc to the trench?
The steeper the subduction angle, the closer the arc will be to the trench. This is controlled by the age of the oceanic crust being subducted where in general the older the crust, the cooler and more dense it will be and so less buoyant and will sink more steeply. ...
Asked in Volcanoes, Edinburgh
What is the name of Edinburgh's extinct volcano?
Castle Rock, on which Edinburgh Castle is built, is the eroded remnant of the basalt plug of an unnamed, extinct volcano. Arthur's Seat, about a mile away, is the main peak of a group of volcanic hills of the same age and composition as Castle Rock. Features on Arthur's Seat suggest that there were multiple volcanic vents in the area 350 million years ago. Subsequent glacial erosion has left the isolated features seen today. ...
Asked in Volcanoes
Where are volcanoes in eastern US?
At the time of writing this answer, there are no active volcanoes in the eastern US - the eastern US being generally regarded as all states east of the Mississippi. But there are areas of possible earthquake hazard in the eastern US. New Madrid fault: This is potentially the most dangerous fault zone in the entire country and is located in northeast Arkansas, southeast Missouri, west Kentucky and west Tennessee, with areas in Illinois, Indiana, and Mississippi also likely to be affected. There are less...
Why were volcanoes made?
Volcanoes are evidence of the ceaseless tectonic activity that our planet has. The molten core of the earth drives all of the processes we see, including volcanoes, earthquakes, even as high up as the northern lights. The heat that is inside of our planet is the driving force behind volcanoes, however volcanoes form in many different areas, and under many different conditions. Different types of volcanoes are evidence of different processes being present underground. However, to put it simply without the heat from...
Did the Greeks believe when a volcano exploded it was angry?
No. The blacksmith god Hephaestus was also a god of volcanoes. The greek believed the volcano represented a smith's furnace and when it erupted it was the equivalent to sparks flying when a smith heats heated metal. There is a link to the source below. ...
Asked in Volcanoes, The Difference Between
What is the difference between lava and magma?
Magma and lava are both molten (liquid) rock, but magma is molten rock produced underneath earth's surface and lava is the magma that was produced that is flowing onto earth's surface. Magma is a molten material found beneath earth's crust that forms minerals with large crystals when it cools slowly and forms minerals with small crystals when it cools rapidly. Lava is on the outside of the volcano and when it cools it forms extrusive igneous rock that are fine grained. When...
Asked in New Zealand, Volcanoes
How many volcanoes are there in the north island NZ?
there are 78 volcanoes in the north island and Auckland has 46 volcanoes which is over half of the amount There are many volcanoes in the north island. Maybe too many to count. Around Auckland there are 50 volcanoes. Then there are Taranaki, Ruapehu, Tongariro, Ngaruahoe, Tarawera, Taupo, Rotorua and so on. Look at related links below to see a list of NI volcanoes. ...
What is a caldera?
A caldera is a depression in the land surface caused by the collapse of land into an emptied magma chamber as a result of an eruption of a stratovolcano. A caldera indicates that the volcano produced an extremely violent eruption. Caldera is also the Spanish language word for cauldron. ...
How do volcanoes affect Hawaii?
Hawai'i was formed from volcanoes. The shape of the islands (volcanic mountains) affects the weather. Volcanic activity causes eartquakes, eruptions on the Big Island cause it to continue to grow, cause fires, close roads. Gasses from the volcanoes can cause vog (volcanic smog) and volcanoes have produced fertile soil in Hawai'i. ...
Asked in Earthquakes, Volcanoes, Pacific Ocean
Why is living in the pacific ring of fire bad?
Because it's known as 'The Pacific ring of fire' simply because volcanoes have erupted around every area included in the ring. This is where the two tectonic plates collide which forces the ground above, up. You wouldn't want to live around a bundle of volcanoes now would you? ...
What effect does silica content have on the magma?
Silica content makes the magma thicker which can cause a more explosive eruption, and also make it so more gases aer open to be trapped ...