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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
What economical effects were there after the Krakatoa eruption?
The eruption of Krakatoa in 1883 had significant economic effects as it caused widespread destruction of infrastructure, crops, and property in the surrounding regions. The eruption also led to a temporary decline in global temperatures due to ash blocking sunlight, resulting in decreased agricultural productivity and food shortages in certain areas. Additionally, the disruption of trade routes and communication networks further impacted local economies.
Why do different parts of magma become solid at different times?
Different parts of magma solidify at different times due to variations in their mineral composition and crystallization temperatures. Minerals with higher melting points will solidify first, creating distinct layers of solidified material within the magma chamber. This process is known as fractional crystallization.
No, NOS (nitrous oxide) is not explosive. It is commonly used as a performance enhancer in car engines to increase power output by providing a temporary boost of oxygen to the engine. However, improper use or handling of NOS can still be dangerous.
Why do earthquakes often happen before volcanoes erupt?
Earthquakes happen before valcanoes erupt because
Earthquakes move nearer to the surface as an eruptionapproaches. And these "microearthquakes" happen more frequently before an eruption, until all the seismometer can register is a distinctive vibration, slight but continuous, known as a harmonic tremor.
The seismic activity associated with volcanism is usually as a result of pressure increases in the magma chamber below the volcano which cause fracturing of the surrounding rock mass
How explosively or quietly a volcano erupts is not affected by the?
If a volcano erupts more explosively, the lava spewing out tends to reach farther, possibly ruining a near by town. If it erupts more quietly, not as much lava tends to spew out. However, any eruption will cause harm to the atmosphere because it releases harmful pollutants.
How is the delicate arch constructive?
The Delicate Arch, located in Arches National Park in Utah, is a natural sandstone arch formed through the processes of erosion and weathering. Over millions of years, the softer rock layers surrounding the arch eroded away, leaving behind the more durable Entrada sandstone that forms the arch itself. The unique shape of the Delicate Arch is a result of differential erosion, where varying rates of erosion along different rock layers create the distinctive arch structure. The arch is constantly being shaped by natural forces such as wind and water, highlighting the ongoing geological processes at work in the park.
What is the vent of a volcano called?
The vent of a volcano is called the crater. It is the opening at the top of the volcano through which lava, ash, and gases are expelled during an eruption.
Is volcano a natural disaster?
Volcanic eruptions are natural disasters because they release massive amounts of matter and energy in a very short time. If this occurs near human population centers it is possible for there to be so much damage the event would be called a disaster.
Because humans are unable to have any control over volcanos erupting and because these events would happen even if humans were not on earth they are natural disasters.
What factors difference in the size of crystal formed?
Crystal size is determined by several factors. However, it essentially boils down to rate of nucleation and rate of diffusion. A low nucleation rate with high diffusion rate will cause very large crystals to grow, whereas a high nucleation rate with low diffusion will cause very small crystals to grow.
Previously, it was commonly believed that cooling rate was a strong influence. The ideas was that if a melt took a long time to cool, crystals would have more time to grow. However, recent studies examining pegmatitic (very large crystals) rocks have shown that cooling of these bodies happens extremely quickly. One proposed explanation is that the amount of water present in the melt is much more important.
Pulverized rock refers to rock that has been broken down into tiny particles or powder. This process is typically achieved through crushing, grinding, or pulverizing techniques. Pulverized rock can be used in various applications, such as construction, agriculture, and landscaping.
PHILVOCS - Philippine Institute of Volcanology and Seismology
What are the good and bad things working as an volcanologist?
Good things about working as a volcanologist include the opportunity to study fascinating natural phenomena, make important scientific discoveries, and contribute to understanding volcanic hazards to protect communities. However, challenges may include fieldwork in remote and hazardous environments, long hours of research and monitoring, and the potential risks associated with working near active volcanoes.
How much did it cost in repair damage after the eruption of mauna loa?
The cost to repair damage after the eruption of Mauna Loa varies depending on the extent of the damage. Costs can range from hundreds of thousands to millions of dollars, including repairing infrastructure, restoring natural habitats, and providing aid to affected communities.
What is a very heavy hard rock found near volcanoes?
Basalt is a very heavy hard rock found near volcanoes. It forms from the rapid cooling of lava on the Earth's surface and is characterized by its dense, fine-grained texture and dark color. Basalt is commonly found in volcanic regions due to its association with lava flows.
Mount Kosciuszko formed as part of the Australian Alps approximately 500 million years ago during the Cambrian Period due to tectonic activity and geological processes. The region has since undergone various changes through erosion and glacial movements, shaping the landscape we see today.
What happens if all the volcanoes in the ring of fire erupted at once?
Odds of dying while reading this: 30 to 2,524,608,000. (if it takes 30 seconds to read this and you live 80 years)
What are three things that are in common with volcanoes and tornadoes?
Tornadoes and volcanoes have little in common, but a few common traits between them include
- Both are potentially deadly and destructive and are generally dangerous to go near, though dormant and extinct volcanoes pose much less of a threat.
- When active both volcanoes and tornadoes can release very large amounts of energy.
- Both volcanoes and tornadoes are difficult to predict and cannot be stopped.
What time of day did Mt Vesuvious erupt 79 AD ago?
Mount Vesuvius erupted in 79 AD during the daytime, on August 24th. The eruption buried the cities of Pompeii and Herculaneum under a thick layer of volcanic ash and pumice.
What is the pacific volcano belt?
pacific volcano belt is also called ring of fire. if u draw a red line along the countries surrounding pacific ocean in a blank world map u get the belt..formed because of plate tectonics and lithosphere collisions and a very active place for earthquakes and volcanoes.
How does the ring of fire impact on the environment?
The Ring of Fire is a region in the Pacific Ocean known for frequent earthquakes and volcanic activity. These natural events can have significant impacts on the environment by causing destruction of habitats, altering landscapes, and affecting ecosystems. The ash and gases released during volcanic eruptions can also contribute to air pollution and affect atmospheric conditions.
Why do cinder cones short lived?
Cinder cones are typically short-lived because they form from a single eruption event rather than being continually active. The ejected volcanic material from cinder cone eruptions tends to pile up around the vent, creating a steep, conical shape. Once the eruption ceases, without ongoing volcanic activity, the cinder cone becomes dormant and erodes relatively quickly due to its loose, unconsolidated material.
Were the the Appalachians formed by a divergent boundary or a convergent boundary?
clearly.Appalachians represent fold mountains that formed as a result of plate collision.thus formed in convergent boundary.this mark one of the cumulative factors that resulted to super Continent Pangaea.
Is Mount Gambier a extinct volcano?
yes it is an extinct volcano but it would not be called extincted it would be called a sleeping volcano.
mount gambier would be known as an extinct volcano but there is a possibilty it is a sleeping one which is called dormant volcano
What is a cloud of ash from a volcano?
When a volcano erupts explosively some of the molten rock may come out in a sort of spray. This cools to form tiny particles of glass called volcanic ash. This ash can be carried into the air by hot volcanic gas, forming billowing or swirling clouds.
An Active Application is one which is currently running either by user or another application and using system memory, resources. the controversy is Suspended Application which means its is not using any Resourses but it still exist in memory(if user again launched same application it launch very fast compared to 1st launch Because application exist in memory) which can seen in Windows 8.
