VOLCANOES

1.  what are the types of volcanoes?

• Cinder Cone Volcanoes
• Composite Volcanoes
• Shield Volcanoes
• Lava Domes Volcanes

2.  What are the top 10 most active volcanoes in the world?

• Eyjafjallajokull, Iceland

• Mount Vesuvius, Italy

• Sakurajima, Japan

• Mount Merapi, Indonesia

• Mount Nyiragongo, D.R of Congo 

• Ulawan, Papua New Guinea

• Taal Volcanoes, Philippines

•  Mauna Loa, Hawaii

• Galeras, Colombia

• Santa Maria, Guatemala

3. What are the 5 biggest ever eruptions?

1. Mount Tambora: This is one of Indonesia's hundred-plus active volcanoes. It's eruption in 1815 rocked the world with after-effects. It caused disease and harmed the growth of crops in the surrounding regions, and caused climate change as far away as North America. It killed over 90,000 people.

2. Mount Krakatoa: Another of Indonesia's volcanoes, its eruption in 1883, killed over 35,000 people mainly due to resulting tsunamis. There was a series of extremely violent explosions over a few months and the biggest could be heard more than 2,000 miles away in Australia.

3. Mount Pelee: The worst volcanoes disaster of the 20th century is considered to be the eruption of Mount Pelee in 1902. It was on the Island of Martinique in the Caribbean and it killed 30,000 people.

4. Mount Ruiz: Mount Ruzi is in Columbia, South America, had two destructive eruptions in 1985. A mixture of mud, ash, and water raced down and the volcanoes slope through river channels. The Mud almost totally buried a town 30 miles from the volcanoes, killing around 25,000 people

5. Mount Vesuvius: In Italy AD 79, this volcano devastated the nearby cities of Pompeii and Herculaneum. Thousands of people thought to have died and the remain of many people was preserved by the ash. Since then, it has erupted several times, mostly in 1944.

4. What supervolcanoes could eruptions in the future?

• It is said that Yellowstone is most likely to be the one that might erupt in the future because it is one of the biggest volcanoes in the world and it can kill 87,000 people immediately. If the supervolcano underneath Yellowstone ever had another massive eruption, it could spew ash for thousands of miles across the United States, damaging building, smothering crops, and shutting down the power plants.

 

5. What happens during the eruption?

• When magma reaches the earth's surface it is called lava. It may pour out in gentle streams called lava flows or erupt violently into the air. Rocks ripped loose from the inside of the volcano or torn apart by the gas may be shot into the air with the lava. These rocks blown out of a volcano are called pyroclastic rocks.

6. Does the sun have any effects on volcanism?

• In the climate model, both the reduced output from the sun and the increased amount of volcanic aerosols (fine particles which reflect sunlight away from the Earth and which are injected into the stratosphere by volcanic eruptions) contribute a sizeable amount to the Northern Hemisphere cooling seen in temperature reconstructions. Their relative importance depends upon uncertain estimates of exactly how much each changed relative to a century later.