Fun Volcano Facts for Kids - Interesting Facts about Volcanoes
Volcanoes are openings in the Earth’s surface. When they are active they can let ash, gas and hot magma escape in sometimes violent and spectacular eruptions. The word volcano originally comes from the name of the Roman god of fire, Vulcan. Volcanoes are usually located where tectonic plates meet. This is especially true for the Pacific Ring of Fire, an area around the Pacific Ocean where over 75% of the volcanoes on Earth are found. While most volcanoes form near tectonic boundaries, they can also form in areas that contain abnormally hot rock inside the Earth.
What is a volcano?
Introduction to volcanoes The earth's mountains, plains, plateaus, soils, rocks, etc. as we see it today is believed to have gone through many phases, with about 80% of it being carved out by the action of volcanoes. A volcano is simply a rapture (opening or vent) on the earth's surface (crust) through which molten magma (extremely hot mixture of gases, lava, ash and other burning substances) escape on to the earth's surface. How do Volcanoes look like? In May 1980, the Mountain St. Volcanoes occur at weak zones or points in the earth’s crust (including constructive and destructive boundaries). For history lovers… In A.D. 79 (really long ago) two Roman cities, Pompeii and Herculaneum, were completely buried in ash and dust in a matter of hours after a volcanic eruption. The word, ‘volcano’ was made out of the name of a Roman god of a small island in the Mediterranean sea of Sicily called ‘Volcan’. Now we shall see in a bit more detail how volcanoes come about.
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Types of Volcanic Eruptions
Volcanic Eruptions The most common type of volcanic eruption occurs when magma (the term for lava when it is below the Earth's surface) is released from a volcanic vent. Eruptions can be effusive, where lava flows like a thick, sticky liquid, or explosive, where fragmented lava explodes out of a vent. In explosive eruptions, the fragmented rock may be accompanied by ash and gases; in effusive eruptions, degassing is common but ash is usually not. Volcanologists classify eruptions into several different types. Hawaiian Eruption In a Hawaiian eruption, fluid basaltic lava is thrown into the air in jets from a vent or line of vents (a fissure) at the summit or on the flank of a volcano. Hawaiian eruptions get their names from the Kilauea volcano on the Big Island of Hawaii, which is famous for producing spectacular fire fountains. Strombolian Eruption Strombolian eruptions are distinct bursts of fluid lava (usually basalt or basaltic andesite) from the mouth of a magma-filled summit conduit.
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Weather wiz kids note Alaina, jessica, and Amelia
Quiz Whiz: Volcanoes
Back Next Quiz Whiz: What's on the Menu? Previous Quiz Whiz: The Moon Games Quiz Whiz: Volcanoes See how much you know about explosive mountains known as volcanoes. More Games African Animals Maze Game Quick Play Arctic Animal Memory Action Arctic Fox Snowboarding Animals Beaver Badminton Dive Deeper Hurricanes 101 - Ep. 3 More Freaky Forces of Nature Auroras, Snow Rollers, and Other Freakiness! Earthquake Lightning Tornado Many cave-dwelling fish don’t have eyes. More Curious Facts Volcanoes 101 - Ep. 13 More Giant's Causeway - Ep. 12 More Tornadoes 101 - Ep. 2 Hurricane Dolphin Diving x Show Link
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Types of Volcanoes & Eruptions / Volcanoes / Science Topics / Learning / Home - GNS Science
Volcanic Fields Volcanic fields, such as Auckland and Northland, are where small eruptions occur over a wide geographic area, and are spaced over long periods of time (thousands of years). Each eruption builds a new single new volcano, which does not erupt again. Mount Eden and Rangitoto Island are examples in Auckland. Cone Volcanoes Cone volcanoes (also called composite cone or stratovolcanoes) such as Ruapehu, Taranaki / Egmont and Ngauruhoe, are characterised by a succession of small-moderate eruptions from one location. The products from the successive eruptions over thousands of years build the cones. Caldera Volcanoes Caldera volcanoes, such as Taupo and Okataina (which includes Mt Tarawera), have a history of infrequent but moderate-large eruptions. Multiple types of eruptions can occur at each of New Zealand’s volcanoes - the eruption type can vary minute to minute. Hydrothermal eruptionAn eruption driven by the heat in a hydrothermal systems.
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