1. WHAT IS A SHIELD VOLCANO 2. WHAT IS A CINDER CONE VOLCANO 3. HOW IS THE SHIEL
ID: 108820 • Letter: 1
Question
1. WHAT IS A SHIELD VOLCANO
2. WHAT IS A CINDER CONE VOLCANO
3. HOW IS THE SHIELD VOLCANO DIFFERENT IN ITS PHYSICAL FEATURES FROM THE CINDER CONE VOLCANO
4. WHAT IS A COMPOSITE VOLCANO
5. WHAT IS A LAVA VOLCANO
6. HOW IS A COMPOSITE VOLCANO DIFFERENT IN ITS PHYSICAL FEATURES FROM THE LAVA VOLCANO
7. WHAT IS A BATHOLITH
8. WHAT IS A DOME MOUNTAIN
9. WE USUALLY VIEW VOLCANOS AS DESTRUCTIVE. FROM THE POWERPOINT, WHAT CLUES DO YOU GET THAT TELLS YOU THAT A VOLCANO IS NOT ONLY A DESTROYER BUT ALSO A BUILDER. EXPLAIN. NO ONE SENTENCE ANSWERS
Explanation / Answer
1. Shield Volcano
A shield volcano is a type of volcano usually built almost entirely of fluid lava flows. They are named for their low profile, resembling a warrior's shield lying on the ground. This is caused by the highly fluid lava they erupt which travels farther than lava erupted from stratovolcanoes. Examples of shield volcanoes are Kilauea and Mauna Loa (and their Hawaiian friends), Fernandina (and its Galápagos friends), Karthala, Erta Ale, Tolbachik, Masaya, and many others.
2. Cinder Cone Volcano
Cinder cones are the simplest type of volcano. They are built from particles and blobs of congealed lava ejected from a single vent. As the gas-charged lava is blown violently into the air, it breaks into small fragments that solidify and fall as cinders around the vent to form a circular or oval cone.
3. Shield volcano differ from cinder cone volcano
Shield volcanoes, are built almost entirely of fluid lava flows. Flow after flow pours out in all directions from a central summit vent, or group of vents, building a broad, gently sloping cone of flat, domical shape, with a profile much like that of a warrior's shield. They are built up slowly by the accretion of thousands of highly fluid lava flows called basalt lava that spread widely over great distances, and then cool as thin, gently dipping sheets. Lavas also commonly erupt from vents along fractures (rift zones) that develop on the flanks of the cone. Some of the largest volcanoes in the world are shield volcanoes. In northern California and Oregon, many shield volcanoes have diameters of 3 or 4 miles and heights of 1,500 to 2,000 feet. The Hawaiian Islands are composed of linear chains of these volcanoes including Kilauea and Mauna Loa on the island of Hawaii-- two of the world's most active volcanoes. The floor of the ocean is more than 15,000 feet deep at the bases of the islands. As Mauna Loa, the largest of the shield volcanoes (and also the world's largest active volcano), projects 13,677 feet above sea level, its top is over 28,000 feet above the deep ocean floor. Whereas Cinder cones are the simplest type of volcano. They are built from particles and blobs of congealed lava ejected from a single vent. As the gas-charged lava is blown violently into the air, it breaks into small fragments that solidify and fall as cinders around the vent to form a circular or oval cone. Most cinder cones have a bowl-shaped crater at the summit and rarely rise more than a thousand feet or so above their surroundings. Cinder cones are numerous in western North America as well as throughout other volcanic terrains of the world.
4. Composite Volcano
Composite volcanoes are constructed from multiple eruptions, sometimes recurring over hundreds of thousands of years, sometimes over a few hundred. Andesite magma, the most common but not the only magma type forming composite cones, produces lava more brittle than basaltic lava because of its higher viscosity. Although andesitic composite cones are constructed dominantly of fragmental debris, some of the magma intrudes the cones as dike or sills. In this way, multiple intrusive events build a structural framework that knits together the voluminous accumulation of volcanic rubble, which can stand higher than cones composed solely of fragmental material. Composite cones can grow to such heights that their slopes become unstable and susceptible to collapse from the pull of gravity. Famous examples of composite cones are Mayon Volcano Philippines, Mount Fuji in Japan, and Mount Rainier, Washington, U.S.A. Some composite volcanoes attain two to three thousandmeters in height above their bases. Most composite volcanoes occur in chains and are separated by several tens of kilometers. There are numerous composite volcano chains on earth, notably around the Pacific rim, known as the "Rim of Fire".
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.