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Volcanoes
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.
16,009 Questions
Shishaldin is a stratovolcano formed through repeated eruptions over thousands of years. It is located on Unimak Island in the Aleutian Islands of Alaska. Its distinctive symmetrical shape is a result of the accumulation of lava flows and volcanic ash during these eruptions.
Why do earthquakes frequently preceede volcanic eruptions.?
Before a volcanic eruption can happen, magma has to migrate form depth into the volcano's magma chamber. This movement of magma inflates the ground round the volcano, and provided the energy to initiate earth movements which cause a swarm of earthquakes.
How did cinder cone volcano get its name?
Cinder cone volcanoes are named because they are composed primarily of loose volcanic fragments called cinders. These cinders are ejected during eruptions and accumulate around the vent, eventually forming the cone-shaped structure we see today.
What causes the rocks in the mantle at divergent boundaries to melt?
Rocks in the mantle at divergent boundaries melt due to the decrease in pressure as tectonic plates move apart. This reduction in pressure lowers the melting point of the rocks, causing them to melt and form magma.
Is every volcano located in the pacific ring of fire related to tectonic plates?
Every volcano that is part of the Ring of Fire, yes. However, several volcanoes that are surrounded by the ring, but not part of it, including the ones that formed Hawaii and the Galapagos, are associated with hot spots.
How tall is the barren volcano?
Barren Volcano, located in Alaska, stands at approximately 5,676 feet (1,730 meters) tall. It is a stratovolcano that last erupted in 1994.
What damage did the 79 AD eruption in pompeii do?
the eruption on Pompeii was very destrutive it killed very living thing in Pompeii because they couldn't escape.The ocean was blocked by title waves because of the under ground plate movement. So they were buried alive in ash.....
How many volcanoes are in Sao Paulo?
There are no active volcanoes in Sao Paulo, Brazil. The region is not located on a tectonic plate boundary where volcanic activity typically occurs.
What is a good universal statement about volcanoes?
Volcanoes are natural phenomenon that result from the accumulation and eruption of magma from beneath the Earth's surface. They can have both destructive and constructive impacts on the environment, shaping landscapes and influencing ecosystems. Monitoring and studying volcanoes is crucial for predicting eruptions and minimizing their potential impact on human communities.
How would you summarize a paragraph about why earthquakes are more dangerous than volcanoes?
Earthquakes are more dangerous than volcanoes because they can occur suddenly, with little to no warning, causing widespread destruction and loss of life. Their impact can be far-reaching, triggering tsunamis and landslides that compound the devastation. In contrast, volcanic eruptions usually have more predictable warning signs, allowing for better preparation and evacuation measures.
Does the mauna loa volcano have snow?
At 13679ft in altitude, Mauna Loa is sufficiently high to receive regular winter snowfall even in the tropics. It is also believed that the summit of Mauna Loa was glaciated like the summit of Mauna Kea during the last ice age. However, unlike Mauna kea, any evidence of former glaciation has since been covered by lavas erupted since the last ice age.
How many people has Cleveland volcano killed?
Cleveland volcano is an active volcano located in Alaska. It has not caused any direct casualties to people to our knowledge, but its eruptions can pose risks to aviation in the area due to ash plumes.
What damage was done to habitat by mount marapi?
Mount Marapi's eruptions have caused damage to the surrounding habitat, such as deforestation, soil erosion, and disruption of wildlife populations. The ash and lava flows can cover vegetation, disrupt water sources, and alter the ecosystem. Additionally, the toxic gases emitted during eruptions can harm both plants and animals in the area.
A dike in a volcano is a vertical or near-vertical fracture that cuts across the rock layers, through which magma can flow to the surface during an eruption. Dikes are essential conduits for magma transport in volcanic systems and can create pathways for lava to reach the surface. They are often associated with volcanic activity and can be observed in volcanic regions around the world.
What is inside a magma chamber?
A magma chamber is a reservoir beneath the Earth's surface where molten rock (magma) accumulates. It consists of magma, which is a mixture of molten rock, crystals, gases, and other materials, all under high pressure. Magma chambers are associated with volcanic systems and can range in size from small pockets to massive reservoirs.
What are the differences between dormant extinct and active volcanoes?
A active volcano regular erupts, but a dormant volcano is one that is capable of erupting
An active volcano is a volcano that is still working, still has lava in it. An inactive volcano is a volcano that either that lava has gone away or it has already erupted and lost all of its lava.
Active volcano depends on how the volcano is sustaining the activity based on the center of it's magma the underneath . What makes a volcano active is relative to the amount of leakage from the center of the earth which was highly molten that sustain the magma of the volcano, once the proportion of molten magma reached the relative pressure and temperature to hold the center of it's activity becomes excessive, the volcano erupts and by finding a way where this extreme pressure and temperature will exit outside of the earth. The movement of molten materials with the relative high temperature and pressure inside the center of it's magma makes the quakes that send signal of it's forthcoming eruption.
Dormant volcano on the other hand receives minimal leakage from the center of the earth's liquid core after eruption and thereby makes it dormant due to the minimal magma amount, the pressure and temperature needed for eruption is not being reached. It may take many years before a dormant volcano show any activity, From the standpoint of science the earth itself could be a sun in the beginning , the universe spanned by those glittering suns and from where it come is only answered by creation.
These balls of fire died because of it's smaller size and the outside cools off but the center of the core is still molten, this could be the possible explanation where the planets came , when the smaller balls of fire cool off , the bigger ball, the sun of the solar system has attracted them based on the magnetic field they possessed to align with the sun.Technically , the universe and everything that we see is dominated by what we called magnetic field, without the systematic layers of magnetic field , the chance of survival is not possible. It is the magnetic field that balance the earth. This is very unique revelation - variance of the magnetic field creates the weather and the oxygen we breathe,the ecosystem is controlled by the magnetic field of the earth to make life habitable for human. Earth in the sense is unique because the valences of all magnetic charges supplement life to human beings.
Islands and mountain come out of it's liquid wrapping, the ocean due to the expansion of the cooled earthen materials when the liquid core of the earth has expand that pushed up the mantle of the earth, island come out from the sea by the expansion underneath due to the extreme activity of the earth's core.
An active volcano is most likely to erupt again eg. Mt St Helen, USA and Mt Merapi in Java A dormant volcano is presently inactive but may erupt again in the future eg. Mount Fuji in Japan.
How much does it cost to go to visit mauna loa?
The entrance fee to visit Mauna Loa within Hawaii Volcanoes National Park is $30 per vehicle or $15 per individual entering on foot or bicycle. These fees cover a seven-day pass to the entire park, including Mauna Loa. Additional costs may include any guided tours, accommodations, or equipment rentals.
What cbrne agent is accompanied with a highly destructive explosion?
An example of a CBRNE agent that is accompanied by a highly destructive explosion is a dirty bomb, which combines conventional explosives with radioactive material. The explosion causes widespread physical damage, while the release of radioactive materials can contaminate the area and cause long-term health effects.
What are yellowstone volcanoes plates?
Yellowstone is located above a hotspot in the Earth's mantle, where a plume of hot rock rises to the surface. This hotspot has fueled volcanic activity in the region, leading to the formation of the Yellowstone Caldera. The North American tectonic plate sits above the hotspot, which has caused the volcanic activity in the area.
Do small crystals form when magma cools rapidly?
No, small crystals form when magma cools rapidly because there is not enough time for large crystals to grow. Rapid cooling results in a fine-grained texture, where smaller crystals have less time to grow before the rock solidifies. This is commonly seen in volcanic rocks like basalt.
Why do you fill volcano with cement?
Volcanoes are filled with cement as a way to stop or redirect lava flows in the event of an eruption. The cement reduces the risk of damage to surrounding areas by containing the lava flow within the volcano. It is a measure taken to protect lives and property in volcanic zones.
Tibet does not have active volcanoes. The region is located on the Tibetan Plateau, which is formed by the collision of the Indian and Eurasian tectonic plates. While there are volcanic regions in China, they are not found in Tibet.
What type of volcano results from alternating explosives and nonexplosives eruptions?
A stratovolcano, also known as a composite volcano, results from alternating explosive and nonexplosive eruptions. These volcanoes are typically tall, steep-sided and are composed of layers of lava flows, ash, and volcanic rocks. Stratovolcanoes are known for their explosive eruptions due to the build up of pressure from the alternating eruptions.
Mount Mazama is a volcano in the Cascade Range located in the Pacific Northwest of the United States. It is situated on the Cascadia Subduction Zone, where the Juan de Fuca Plate is being subducted beneath the North American Plate.
What is volcanic gases and steam?
The gases that come out of volcanoes are water vapor follwed by carbon dioxide and sulfur dioxide.
I understand but i want to know the %'s. Do they give off more sufur dioxide or carbon dioxide?
