0
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
When magma erupts onto the planets surface what it is called?
When magma erupts onto the planet's surface, it is called lava.
How big can underwater volcanoes get?
The tallest volcanoes on earth existed millions of years ago, and may have towered many kilometers above their base level.
Existing volcanoes have reached heights of over 4000 meters (13000 feet) above sea level. The tallest volcano, Mauna Kea, has its base on the ocean floor and is over 10000 meters (33000 feet) in total height.
(Olympus Mons, on Mars, is more than 22 km tall, or over 14 miles.)
Mount Laki in Iceland was formed through a volcanic eruption in 1783. The eruption created a long fissure and produced large amounts of lava and toxic gases, leading to widespread environmental and societal impacts. The volcanic activity lasted for several months, ultimately resulting in the formation of Mount Laki and the surrounding landscape.
How do volcanoes form in the middle of a tectonic plate?
Many of these volcanoes are the resul of hot spots. At these locations, extra hot plumes of mantle material build up below the crust and partially melt, forming magma that rises through the crust to form volcanoes.
What mt range is mt st helens in?
Mount St. Helens is located in the Cascade Range, a mountain range in the Pacific Northwest region of North America.
What is the volcanic fragments that are 2-64 mm in size?
Volcanic fragments that are 2-64 mm in size are classified as lapilli. These fragments are formed during explosive volcanic eruptions when magma is fragmented into small pieces as it is ejected into the air. Lapilli can vary in composition and shape, and are larger than volcanic ash particles but smaller than volcanic blocks.
Can volcanoes make the earth shake?
Yes, volcanoes can cause the Earth to shake. This shaking can occur as magma and gases move through the volcano's plumbing system, causing pressure changes that result in earthquakes. Additionally, volcanic eruptions can generate powerful seismic waves that can be felt as the ground shakes.
How hot is the basalt lava from the Kilauea volcano in Hawaii?
The basalt lava from Kilauea volcano in Hawaii can reach temperatures between 1,070 to 1,170 degrees Celsius (1,958 to 2,138 degrees Fahrenheit). These temperatures can vary depending on the specific eruption and the type of lava being produced.
What are the volcanoes of Hawaii and other places far from tectonic plate boundaries known as?
The volcanoes in Hawaii and other places far from tectonic plate boundaries are known as hot spot volcanoes. These volcanoes are formed by magma upwelling from deep within the Earth's mantle, creating volcanic islands or features such as seamounts. An example of a hot spot volcano is the Hawaiian Islands.
What years have Mount Vesuvius erupted?
From 6 January to 23 February 1944, lava flows appeared within the rim and there were outflows. The activity paused on 23 February and resumed on 13 March. Small explosions then occurred until the major explosion took place on 18 March 1944
What is the approximate age of mount rainier?
Mount Rainier is estimated to be around 500,000 years old, making it a relatively young stratovolcano in geological terms.
What is the worst eruption from santorini volcano in Greece?
The worst eruption of Santorini ocurred some time between 1500 and 1700 BC. Realtively little is known about the eruption as few records survive from this time. What is known is that the erumption was enormous, likely 100 times larger than the 1980 eruption of Mount St. Helens. A massive quantity of ash was pumped into the atmosphere, likely blanketing much of the Mediterranean. As the eruption drained the magma chamber, much of the island collapsed into the ocean, generating massive tsunamis.
Who are scientists that study volcanoes?
Volcanologists are scientists who study volcanoes, including their eruptive behavior, magma composition, and associated hazards. These scientists analyze volcanic activity to better understand volcanic processes and help mitigate potential risks to nearby communities.
How do subduction plate boundaries result in magma?
Subduction plate boundaries occur when one tectonic plate moves beneath another. As the descending plate sinks into the mantle, it heats up and releases water and other volatiles, causing the overlying plate to melt. This process generates magma that can rise to the surface and create volcanic eruptions.
Would a'a form lava tubes or pahoehoe?
Both a'a and pahoehoe lava types can create lava tubes, but pahoehoe lava usually forms smoother, more continuous tubes due to its lower viscosity and higher flow rates. A'a lava tubes are typically more irregular and blocky, formed by the slow-moving, cooler outer crust of the flow.
Why do earthquakes and volcanoes occur near the edges of the continents?
Earthquakes and volcanoes mainly occur near the edges of continents because of plate tectonics. This is where tectonic plates interact, leading to the formation of fault lines, subduction zones, and volcanic arcs. The movement of these plates causes intense geological activity, resulting in earthquakes and volcanic eruptions.
When will santorini erupt next?
It is currently not possible to predict exactly when Santorini will erupt next, as volcanic activity is unpredictable. Scientists continue to monitor the volcano for any signs of unrest to provide early warnings if an eruption is imminent.
What was Santorini's deadliest eruption?
1630 BC eruption of Santorini is recognized as one of the most explosive volcanic eruptions in historic times, the event is only a single eruption in a continuum of eruptive activity associated with subduction. The geologic record over the past one million years indicates that less explosive Strombolian and Vulcanian eruptions have occurred at Santorini about once every 5000 years, and that Plinian-typeevents have occurred about once every 20,000 years. Since the late Bronze Age eruption, the two Kameni islands, Nea and Palea Kameni, have formed in the center of the caldera by numerous eruptive events over the past 2000 years. Santorini thus appears to be particularly active compared to its geologic past. There have been several eruptions in the 19th and 20th centuries, with the most recent occurring in 1950
What is volcano that hasent erupted in a while is called?
volcanoes that don't erupt in a while is called dormant.
volcanoes that don't erupt anymore are called extinct.
volcanoes that erupt regularly are called active.
Does composite volcano have to be capitalized?
Yes, "Composite volcano" should be capitalized when it is used as a proper noun or in a title. When used generically to describe a type of volcano, it may not need to be capitalized.
How many times did sangay eruption?
Sangay volcano in Ecuador has been erupting regularly for centuries. It experiences nearly daily explosions of varying intensities, with some periods showing increased activity.
What the different shape between an active and in active of volcano?
An active volcano is currently erupting or showing signs of erupting in the near future while an inactive volcano has not erupted in a long time and is not expected to erupt again. Active volcanoes may have a conical shape with a crater at the summit, while inactive volcanoes may appear more eroded with a flattened or domed shape.
What happens after volcanoes erupt for kids?
After a volcano erupts:
*ash settles on lava rocks
*lava cools
*wind carries spores to lava rocks
*pioneer species break down rocks
*soil forms
*large plants grow
*animal arrives
When a hot spot stays put but the plate above it keeps moving what happens?
It leaves an island arc or chain if the hot spot is in the ocean. A great example of this is the Hawaiian Island chain. There is another hot spot in the North American plate which now resides in Yellowstone National park. This hot spot simply leaves a chain of extinct volcanic areas as the continental plate moves over it.
