Arenal Volcano is a 1,633 meter (5,300 feet) high mountain, which is perfectly conically shaped with a crater of 140 meters. The volcano was asleep for hundreds of years and exhibited a single crater at its summit, with minor fumaroles activity, covered by dense vegetation.
Arenal is considered one of Costa Rica's most active volcanoes and has been studied by seismologists from around the world for many years, and although the activity nowadays is less pronounced, you can still see daily columns of ash emanating from the crater of this majestic conically shaped behemoth. For a scenic hiking trail and views of the volcano, you can visit the Arenal Volcano National Park. March 1996:At this time the volcano started to produce regular lava flows, accompanied by intermittent explosions of different types of gases. A specialist from the Costa Rica Volcanic and Seismic Observatory explained that this type of activity is not unusual for the volcano.
As a normal precaution, authorities declared a red alert, closed the road between La Fortuna and Tilaran, which traverses the north side of the volcano, and evacuated approximately 450 people (mostly tourists) from the immediate area including several hotels and tourism related businesses. At 5.20 pm on Tuesday the volcano was still discharging material, but activity had decreased significantly. May 7, 1998The eruptions of May 7, 1998 damaged two square kilometers and destroyed a 400 by 100 meter area of green forest in the vicinity of Arenal Volcano. UFO sighting over Cote Lagoon near the Arenal Volcano, picture was taken around 1978 approximately, by topographers. Volcanoes – FEMA for kids teaches kids about volcanoes and how to prepare a disaster supply kit.
Volcano Expedition – At Volcano Expedition, kids will have fun reading questions that other kids ask about volcanoes. Volcano Topic Activities – Teachers and parents can use these simple lesson plans to teach kids how to make their own volcanoes and help them understand plate tectonics.
What Causes a Volcano – Take a look at this lesson to learn about what causes a volcano and much more! Let’s Make a Volcano – Kids will love this experiment of building a volcano and watching it erupt. Volcanic Landforms – Teachers of older students can use this website to help develop a lesson plan for teaching kids about volcanic landforms. How Volcanoes Work – Students can learn more about volcanoes and landforms as well as view images and animations. Volcanic Violence – Kids can learn more about how volcanoes work as well as more about Mount St.
Volcanic Eruptions – Easy for kids to read, this can be used to read more about volcanic eruptions. Plate Tectonics and Volcanoes – Learn about plate tectonics and how they are apart of the formation of volcanoes. Volcanoes of the World – Older kids and educators can use this to find volcanoes around the world.
Volcano Facts – Kids can learn all the basic facts about volcanoes from tectonic plates to planning for a disaster. Science for Kids – Kids can use this interactive to see images and learn more about volcanoes.
Mount Rainier – Educators and students can learn more about Mount Rainier which is known as America’s most dangerous volcano.
World’s Most Active Volcanoes – Volcanic Live provides a great list of the world’s most active volcanoes as well as where they are located. Potentially Active Volcanoes – Students can use this interactive map to learn more about active volcanoes in the United States. Recent Earthquakes and Active Volcanoes – Virtual times offers a map of recent earthquakes and active volcanoes.
Volcano Travel – Suitable for third grade students,they can use this to search for and learn about volcanoes around the world.
Different Volcanic Types – Explore each of the types of Volcanoes and learn how each are created!
Volcanic Types – Take a look at the different kinds of volcanoes there are and how they form. Exploring the Environment – Exploring the Environment offers pages and information about volcanoes for teachers. Types of Volcanoes (PDF) – Kids in sixth grade or higher can use the PDF document to learn more about the different types of volcanoes. The Basic Types of Volcanoes – Older kids and educators can use this to learn the basic types of volcanoes, basic facts and terms, the difference between dormant, active and extinct volcanoes, and the different types of eruptions.

Savage Earth – High school kids can read about volcanoes and the hazards caused by the gases emitted from them.
Mud Volcanoes – Soupy the bat learns about rocks and minerals and how they are created from magma.
Edible Igneous Rocks – A fun activity for kids, making igneous rocks from ingredients which include chocolate chips will help them learn about volcanoes, magma, and lava.
An area of the Earth in which earthquake and volcanic eruptions are frequent is a place that circles around the base of the Pacific Ocean. Volcano Vacation – This web quest is designed for students in order to teach them about the ring of fire and help them make a brochure to persuade people to visit a volcano. Amazing Volcanoes around the World – This think quest project was designed for kids by kids. Volcano Activities – Weather Wiz Kids has a lot of volcano information ranging from the basics of volcanoes to safety tips.
Arenal Volcano, the youngest stratovolcano in Costa Rica, is one of the most active volcanoes in that country and in the world. The volcanic arc of Costa Rica, where Arenal is located, is a chain of mountains resulting from the subduction of the Cocos tectonic plate under the Caribbean Plate. Plate tectonics map for Central America showing the convergence of the Cocos and Caribbean Plates responsible for Central American volcanism. Arenal Volcano is a conical stratovolcano that stands on the shore of Lake Arenal in northwestern Costa Rica.
Arenal is a young volcano at about 7,000 years old, and is still in the process of building its 1,670 m (5,479 foot) cone by alternating periods of major explosive eruptions with lava flows that stabilize the loose material on its cone. The earliest known eruptions of Arenal began around 7,000 years ago, breaking through older volcanic tuffs and sedimentary rocks. In the summer of 1968, people living near the volcano noticed that the temperatures of hot springs around the volcano were increasing, and noticeable fumarolic activity began appearing on the volcano.
Arenal has been almost continuously active since the 1968 eruption, extruding basaltic andesite lava flows, Strombolian and occasional Vulcanian explosions from the summit craters, and pyroclastic flows from the collapsing fronts of the lava flows. Outdoorsy types will love the Arenal Volcano and Monteverde areas for their devotion to nature.
Arenal Volcano is geologically considered a young volcano and its age is estimated to be less than 3,000 years. The volcano is located in the northern zone of the country, fifteen kilometers southwest of La Fortuna in San Carlos.
Water from the Arenal Lake is used for hydroelectric power, with the purpose of satisfying the electricity demands of the inter-connected national system and the Guanacaste irrigation projects. Next to the volcano is the Arenal Volcano National Park with a wide variety of flora and fauna and a great view of the volcano. One can often be treated to breathtaking views, including the opportunity to watch the volcano in action, with plumes of smoke emanating from its? crater. There is an observatory site located in the park from where you have a spectacular view of both the volcano and the Arenal Lake. These explosions of steam, water, gases, and ash reached altitudes of up to 5 kilometers where winds again carried the material across the Arenal reservoir (Lake Arenal) and over the town of Tilaran. There were no reports of injuries caused by the volcanic activity; however authorities decide to err on the side of caution.
A fissure, 500 meters long and 10 meters deep opened up in the wall of the crater and all the material slid down the side of the volcano. More recently there have been sighting reported by visitors to the area, such as the one reported to ufoweek, an online magazine on September 15, 2010 where a traveler claims that when in the Arenal Vocano area, he and his friends saw a UFO come from the north from the Arenal Lake area. This opening allows magma and volcanic ash to escape from below the Earth's crust and erupt out of the volcano. It will teach them about the global perspective, volcano types, allow them to explore the inside of a volcano as well as build a volcano and watch it erupt.
Kids will enjoy viewing volcano artwork, taking virtual field trips and reading Rocky’s adventure stories. Recently NASA was able to see through satellite heat and ash plumes from volcanoes in Indonesia, Eritrea, and Chile.
It discusses how volcanoes are formed, volcanoes around the world, major volcanoes, and the ring of fire. It has been producing lava and pyroclastic flows almost continuously since 1968; this activity has been both a hazard to people living near the volcano and a draw for thousands of tourists over the years.
Costa Rica is part of the Central American isthmus, which connects the North and South American continents Volcanoes are mostly confined to a NW-SE trending strip in the northern part of Costa Rica because the Cocos plate subducts at a very steep angle there, and because the Cocos Ridge disrupts normal subduction to the southeast.

Her concentration is in volcanology, and she is currently researching lava dome collapses and pyroclastic flows.
It is the youngest and most active volcano in the country, and has been in near-constant eruption since 1968.
Plinian eruptions occurred about every 1,000 years, interspersed with lava flow and pyroclastic activity and periods of quiescence, and built Arenal into a classic stratovolcano.
The eruption began on July 29 when three vents opened on Arenal's west flank and began producing Vulcanian explosions. Fumaroles on the summit and flanks continue to emit gases, and there are numerous hot springs ringing the base of the volcano.
Due to the eruption three more craters were created on the western flanks of the volcano but only one of them exists at present. The activity was so pronounced that it triggered a landslide (avalanche) as part of the crater wall fell apart on the northwest side of the volcano. During this day, May 7, 1998, there were a total of 23 eruptions, between 1.05 pm and 7 pm, and shortly thereafter the volcano returned to its normal state.
There are various types of volcanoes and they can be found all over the Earth's surface, as well as underneath the ocean. In the United States, active volcanoes can be found in Washington, California, Oregon, and Alaska. These volcanoes are the Nabro volcano, the Soputan volcano, and the Puyehur-Cordon volcano.
The cinder cone volcanoes are built from blobs of lava and particles which is ejected from one eruptive event. Located on the eastern shore of Lake Arenal in northwestern Costa Rica, Volcan Arenal was thought to be extinct prior to the eruptions of 1968, although it is now known that eruptions have occurred on and off for the last 7,000 years.
Arenal is located northwest of the Chato volcanic complex, which last erupted about 4,000 years ago. Plinian eruption columns are even more dangerous, since they can drop ash on local towns and produce pyroclastic flows that could travel beyond the flanks of the volcano into populated areas. Before 1968, the most recent eruption occurred 520 years BP, although it does not appear in any recorded or oral histories, and people assumed that the volcano was extinct.
Although lava flows have traveled beyond the base of the volcano, pyroclastic flows tend to be confined to valleys on the volcano's flanks, and have not had significant impacts on people living near the volcano since the 1968 eruption.
La Fortuna, as mentioned above, the nearest town to the Arenal Volcano is very user friendly as it is ever more focused on satisfying the needs of the visitors of the Arenal Volcano. Another eruption took place at 2.20 pm with material emerging from the same part of the volcano.
Authorities reported no unusual behavior and the Arenal Volcano National Park was reopened the same week.
It works its way to the top of the volcano and eventually out of the hole in the Earth’s surface. Pyroclastic activity caused some of the deaths in the 1968 eruption of Arenal, and the 40th anniversary of this event was recently commemorated with parades and other events in towns around the base of the volcano. Because Arenal is so active, tourism is a major source of income for the region, and the area around the volcano has been made into a national park.
Similarly, the Arenal area is concentrated around the Arenal Volcano’s giant stature, which creates a picturesque backdrop and thermal springs for its nature-minded resort areas below.
Local seismologists investigated the activity of the volcano and park rangers continue to vigorously enforce the safety perimeter. These are large in dimension and built from lava in alternating layers, cinders, volcanic ash and bombs that reach far above their base. There are very big volcanoes on Earth but the largest volcano known in the solar system is on Mars.
Shield volcanoes are built from flow after flow of lava which pours out in multiple directions.
The Hawaiian Islands are shield volcanoes as are some of the biggest volcanoes in the world.

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