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Tag Archives: Volcanoes

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How Volcanoes Affect Climate

ScienceBy William Anderson (Schoolworkhelper Editorial Team)December 26, 2012Leave a comment

The volcanic ash cloud created by a volcanic blast can change interactions between the atmosphere and sun, affecting climate patterns. When a volcano erupts, the main things that come out of it are sulfur dioxide, water vapor, dust, and ash that go into the atmosphere. The eruption of a volcano can cause a cooling or…

Volcanoes: Types, Formation, Elements

ScienceBy William Anderson (Schoolworkhelper Editorial Team)May 27, 20121 Comment

A volcano is a vent in the earth from which molten rock and gas erupt. The molten rock that erupts from the volcano forms a hill or mountain around the vent. The lava may flow out as a viscous liquid or it may explode from the vent as solid or liquid particles. Kinds of Volcanic…

Our Planet: The Four Spheres

ScienceBy William Anderson (Schoolworkhelper Editorial Team)August 28, 20101 Comment

THE LITHOSPHERE The part of the earth that is made up of rocks and minerals, consists of the uppermost layers of the earth Came into being billions of years ago and still continues to change and evolve Changes to the worlds land masses, tectonic plates Volcanoes, earthquakes THE HYDROSPHERE The part of the earth made…

Plate Tectonics & Continental Drift Proof

ScienceBy William Anderson (Schoolworkhelper Editorial Team)August 25, 2010Leave a comment

Definition: Continental Drift It is the theory that the earth’s continents are constantly in motion and at one time they all collided together to form one massive continent about 300 million years ago! Pangaea (meaning “all lands”) began to break up and drift apart. Founder of the Continental Drift Theory Alfred Wegener came up with…

Where are Active Volcanoes?

ScienceBy William Anderson (Schoolworkhelper Editorial Team)June 26, 2010Leave a comment

Volcanoes formed at certian locations because they were along plate boundaries, which provide the ideal circumstances for magma formation and its subsequent eruption. At subduction boundaries the lithopsheres collide and the denser plate is pulled down into the mantle. This introduces water into the asthenosphere which lowers melting temperature and allows the less dense magma…

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