More than 80% of the earth’s surface is volcanic in origin. The sea floor and some mountains were formed by countless volcanic eruptions. Gaseous emissions from volcano formed the earth’s atmosphere. There are more than 500 active volcanoes in the world.
- 1 Did you know facts about volcanoes?
- 2 What can you say about volcanoes?
- 3 What are 3 good things about volcanoes?
- 4 How old is the first volcano?
- 5 Why are volcanoes important?
- 6 What are 5 positive effects of volcanoes?
- 7 Why is it important to know about volcanoes?
- 8 Are volcanoes good for Earth?
- 9 Where do volcanoes occur?
- 10 What did you learn about volcanoes?
- 11 How do you explain a volcano to a child?
- 12 Who discovered volcanoes?
- 13 Why are volcanoes beautiful?
- 14 Which country has the biggest volcano?
- 15 How long do volcanoes live?
- 16 Did volcanoes create life?
- 17 How do volcanoes bring life?
- 18 How do volcanoes affect humans and the environment?
- 19 Why are volcanoes formed?
- 20 What if there were no volcanoes?
- 21 What are types of volcanoes?
- 22 Why are volcanoes bad?
- 23 Do volcanic eruptions increase temperature?
- 24 What does a volcano contain?
- 25 What is volcano explain?
- 26 How many volcanoes are in the ocean?
- 27 What are the 3 famous volcanoes?
- 28 What is the most interesting volcano?
- 29 What are volcanoes Class 7?
- 30 How many volcanoes are there in the world?
- 31 Where are famous volcanoes in the world?
- 32 Why do volcanoes erupt answer key?
- 33 When did we learn about volcanoes?
- 34 When did people start studying volcanoes?
- 35 Did Romans have a word for volcano?
- 36 What country has no volcanoes?
- 37 Does India have a volcano?
- 38 What is the smallest volcano on Earth?
- 39 Can you freeze lava?
- 40 How many volcanoes erupted in 2020?
- 41 How hot is lava?
- 42 How do volcanoes affect evolution?
- 43 How do volcanoes shape the earth?
- 44 Can new volcanoes form?
- 45 What happens when volcanoes erupt?
- 46 Can anything live in a volcano?
- 47 What kind of energy do volcanoes produce?
- 48 Do volcanoes affect the weather?
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49
How volcanoes affect the society?
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49.1
Related Posts
- 49.1.1 Do all volcanoes look the same What is common in all volcanoes?
- 49.1.2 Do composite volcanoes have high or low viscosity?
- 49.1.3 Do earthquakes and volcanoes always occur at the same time?
- 49.1.4 Do composite volcanoes have pyroclastic material?
- 49.1.5 Did Socrates believe knowledge is born within us?
- 49.1.6 Do all continents have volcanoes?
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49.1
Related Posts
Did you know facts about volcanoes?
- Volcanoes are openings of the Earth’s surface. …
- The word volcano comes from the word ‘vulcan’. …
- Volcanoes can be active, dormant or extinct. …
- The liquid inside the volcano is called magma. …
- Lava is the liquid that is expelled from the volcano. …
- Lava is very, very hot!
What can you say about volcanoes?
Volcanoes spew hot, dangerous gases, ash, lava, and rock that are powerfully destructive. People have died from volcanic blasts. Volcanic eruptions can result in additional threats to health, such as floods, mudslides, power outages, drinking water contamination, and wildfires.
What are 3 good things about volcanoes?
- volcanic rock and ash provide fertile land which results in a higher crop yield for farmers.
- tourists are attracted to the volcano, which increases money to the local economy.
- geothermal energy can be harnessed, which provides free electricity for locals.
How old is the first volcano?
The oldest volcano in the chain is the inactive volcano Meiji, which is 85 million years old. So to answer your original question, volcanoes have been erupting on Earth for at least the last 4 billion years and were undoubtedly more active in the distant past than they are today.
Why are volcanoes important?
Volcanic materials ultimately break down and weather to form some of the most fertile soils on Earth, cultivation of which has produced abundant food and fostered civilizations. The internal heat associated with young volcanic systems has been harnessed to produce geothermal energy.
What are 5 positive effects of volcanoes?
There are many positive effects of volcanoes including: Fertile soils, tourism, geothermal energy, creation of new land and building materials.
Why is it important to know about volcanoes?
It is important to know about volcanoes because volcanoes spew hot, dangerous gases, ash, lava, and rock that are powerfully destructive and it can kill you. We should care because if a volcano erupts around where we live, we would know how to protect ourselves from it.
Are volcanoes good for Earth?
Volcanoes have done wonderful things for the Earth. They helped cool off the earth removing heat from its interior. Volcanic emissions have produced the atmosphere and the water of the oceans. Volcanoes make islands and add to the continents.
Where do volcanoes occur?
Sixty percent of all active volcanoes occur at the boundaries between tectonic plates. Most volcanoes are found along a belt, called the “Ring of Fire” that encircles the Pacific Ocean. Some volcanoes, like those that form the Hawaiian Islands, occur in the interior of plates at areas called “hot spots.”
What did you learn about volcanoes?
An erupting volcano can trigger tsunamis, flash floods, earthquakes, mudflows and rockfalls. More than 80% of the earth’s surface is volcanic in origin. The sea floor and some mountains were formed by countless volcanic eruptions. Gaseous emissions from volcano formed the earth’s atmosphere.
How do you explain a volcano to a child?
A volcano is a mountain that opens downward to a pool of molten rock below the surface of the earth. When pressure builds up, eruptions occur. Gases and rock shoot up through the opening and spill over or fill the air with lava fragments.
Who discovered volcanoes?
Vulcan was the ancient Roman god of fire. A volcanologist is a geologist who studies the eruptive activity and formation of volcanoes and their current and historic eruptions.
Why are volcanoes beautiful?
With fiery molten channels that stretch far below the surface, volcanoes connect us to the very core of the Earth. Active or dormant – they resonate with an energy and beauty beyond that of mere mountains.
Which country has the biggest volcano?
Country | Holocene Volcanoes | Active since 1950 CE |
---|---|---|
1. United States | 161 | 42 |
2. Japan | 122 | 43 |
3. Indonesia | 121 | 58 |
4. Russia | 117 | 33 |
How long do volcanoes live?
Stromboli volcano off the coast of Italy has been erupting more or less continuously for over 2000 years! Other volcanoes have eruptions that last less than a day. According to the Smithsonian Institute’s Global Volcanism Program, the median length of time for a single eruption is seven weeks.
Did volcanoes create life?
Somehow, about four billion years ago, organic life sprang from a violent, oxygen-free Earth. The very first chemical building blocks of life emerged as volcanoes erupted and asteroids smashed into the planet.
How do volcanoes bring life?
Over time, this released gases into the atmosphere. In turn, this created Earth’s oceans, which allowed the first life forms to flourish. Put simply, volcanoes keep the Earth warm and wet, which are two critical elements for sustaining life.
How do volcanoes affect humans and the environment?
Among the hazards in distant areas are the effects of toxic volcanic ashes and problems of the respiratory system, eyes and skin, as well as psychological effects, injuries, transport and communication problems, waste disposal and water supplies issues, collapse of buildings and power outage.
Why are volcanoes formed?
A volcano is formed when hot molten rock, ash and gases escape from an opening in the Earth’s surface. The molten rock and ash solidify as they cool, forming the distinctive volcano shape shown here. As a volcano erupts, it spills lava that flows downslope. Hot ash and gases are thrown into the air.
What if there were no volcanoes?
Without volcanoes, most of Earth’s water would still be trapped in the crust and mantle. Early volcanic eruptions led to the Earth’s second atmosphere, which led to Earth’s modern atmosphere. Besides water and air, volcanoes are responsible for land, another necessity for many life forms.
What are types of volcanoes?
- Cinder Cone Volcanoes.
- Composite Volcanoes (Stratovolcanoes)
- Shield Volcanoes.
Why are volcanoes bad?
Several hazards may affect the area around the volcano, such as lava flows, pyroclastic flows, lahars, jökulhlaups and landslides or debris avalanches. Volcanic activity also produces hazards that can affect areas far from the volcano, such as tephra or ash falls, releases of gas and tsunamis.
Do volcanic eruptions increase temperature?
Volcanic eruptions can influence climate and global temperature because of the gases and dust particles spewed into the atmosphere during the eruption. Volcanic eruptions actually cool the planet because the particles ejected from volcanoes shade incoming solar radiation.
What does a volcano contain?
Instead, volcanoes are built by the accumulation of their own eruptive products — lava, bombs (crusted over ash flows, and tephra (airborne ash and dust). A volcano is most commonly a conical hill or mountain built around a vent that connects with reservoirs of molten rock below the surface of the Earth.
What is volcano explain?
A volcano is an opening in the earth’s crust through which lava, volcanic ash, and gases escape. Volcanic eruptions are partly driven by pressure from dissolved gas, much as escaping gases force the cork out of a bottle of champagne.
How many volcanoes are in the ocean?
Only 119 submarine volcanoes in Earth’s oceans and seas are known to have erupted during the last 11,700 years. Hydrothermal vents, sites of abundant biological activity, are commonly found near submarine volcanoes.
What are the 3 famous volcanoes?
- Mount Vesuvius, Italy. Mount Vesuvius as it looks today. …
- Krakatoa, Indonesia. …
- Mount St. …
- Eyjafjallajökull, Iceland. …
- Mount Pinatubo, Philippines. …
- Mount Etna, Italy (Sicily) …
- Mount Tambora, Indonesia. …
- Mauna Loa, Hawaii.
What is the most interesting volcano?
- 1) Mount St. Helens, USA. …
- 2) Mount Etna, Italy. As one of Sicily’s most famous attractions, Mount Etna is Europe’s most active volcano. …
- 3) Eyjafjallajökull, Iceland. …
- 4) Mount Vesuvius, Italy. …
- 5) Mount Fuji, Japan. …
- 6) Mount Ararat, Turkey.
What are volcanoes Class 7?
A volcano is a vent from which a combination of melted rock, solid rock debris and gas erupts. It has a reservoir of molten material below the surface (magma chamber) called magma, and when this magma rises to the surface, it is called lava.
How many volcanoes are there in the world?
There are about 1,350 potentially active volcanoes worldwide, aside from the continuous belts of volcanoes on the ocean floor at spreading centers like the Mid-Atlantic Ridge. About 500 of those 1,350 volcanoes have erupted in historical time.
Where are famous volcanoes in the world?
Kilauea – Hawaii, United States
In the south-east of Hawaii, Kilauea mountain is home to one of the most famous volcanoes in the world.
Why do volcanoes erupt answer key?
Volcanoes erupt when molten rock called magma rises to the surface. Magma is formed when the earth’s mantle melts. Melting may happen where tectonic plates are pulling apart or where one plate is pushed down under another. Magma is lighter than rock so rises towards the Earth’s surface.
When did we learn about volcanoes?
But in terms of culture, when did humanity first register them? Well in terms of science, the study of volcanology began in earnest during the 79 ACE paroxysm at Mount Vesuvius that famously buried Pompeii and Herculaneum in pyroclastic surges and ash fallout.
When did people start studying volcanoes?
Perhaps “modern” volcanology began in 1912, when Thomas A. Jaggar, Head of the Geology Department of the Massachusetts Institute of Technology, founded the Hawaiian Volcano Observatory (HVO), located on the rim of Kilauea’s caldera.
Did Romans have a word for volcano?
They had no word for ‘Volcano’
The actual word ‘volcano’ wasn’t invented until the 1610s, with the word derived from “Vulcan,” the Roman God of Fire. Given the same attributes of the Greek Hephaestus, the god of fire and blacksmiths, Vulcan’s worship was very ancient.
What country has no volcanoes?
Even though Australia is home to nearly 150 volcanoes, none of them has erupted for about 4,000 to 5,000 years! The lack of volcanic activity is due to the island’s location in relation to a tectonic plate, the two layers of the Earth’s crust (or lithosphere).
Does India have a volcano?
If you took a ferry from the southeast Indian city of Chennai, it will take you 58 hours to reach Port Blair, the capital of Andaman and Nicobar Islands. Four-hour sail from there, you will get to see India’s only active volcano, the Barren Island volcano.
What is the smallest volcano on Earth?
Standing a diminutive 43 feet tall, Cuexcomate is commonly known as the world’s smallest volcano.
Can you freeze lava?
When molten rock, or lava, freezes, it forms crystals. If the rock freezes quickly, the crystals do not have time to grow very big. Lava that runs out of volcanoes cools down quickly.
How many volcanoes erupted in 2020?
There were 73 confirmed eruptions at some point during 2020 from 68 different volcanoes; 27 of those were new eruptions that started during the year. A stop date with “(continuing)” indicates that the eruption was considered to be ongoing as of the date indicated.
How hot is lava?
When lava first breaks through Earth’s surface, it is an extremely hot liquid. On average, fresh lava can be between 1,300° F and 2,200° F (700° and 1,200° C)! Depending on its exact temperature, fresh lava usually glows either orange/red (cooler) or white (hotter).
How do volcanoes affect evolution?
Volcanoes have been instrumental in shifting the course of evolution many times before. Sometimes, volcanic activity has been so rampant, that it warmed the world too much for many forms of life to handle, as was the case with the Palaeocene-Eocene Thermal Maximum extinction event about 55.5 million years ago.
How do volcanoes shape the earth?
Answer and Explanation: Volcanoes change the earth’s surface by allowing molten rock, or magma, to escape the earth and create rock formations or mountains. When magma erupts from the earth in the form of lava, it cools very quickly due to the much cooler atmospheric temperatures.
Can new volcanoes form?
Geologists have found a new way volcanoes form. Geoscientists have discovered the first direct evidence that material from deep within Earth’s mantle transition zone — a layer rich in water, crystals and melted rock — can percolate to the surface to form volcanoes.
What happens when volcanoes erupt?
A volcano is a vent in the Earth’s crust from which eruptions occur. There are about 1500 potentially active volcanoes worldwide. When volcanoes erupt they can spew hot, dangerous gases, ash, lava and rock that can cause disastrous loss of life and property, especially in heavily populated areas.
Can anything live in a volcano?
Scientists often discover new species in deep undersea exploration, like the Crown Jellyfish, which was first spotted 5,000 feet (1500 M) underwater. In 2009, Oregon State University researchers found shrimp, crab, limpets and barnacles living around a highly active volcano near Guam.
What kind of energy do volcanoes produce?
Volcanoes are the main source of geothermal energy.
Do volcanoes affect the weather?
Yes, volcanoes can affect weather and the Earth’s climate.
How volcanoes affect the society?
Lava flows and lahars can wipe out the flanks of mountainsides. Volcanic ash can blanket the landscape for miles, and ash clouds can disrupt aircraft travel, such as the incident in 1989 when ash from Alaska’s Redoubt volcano temporarily disabled a passenger airplane.