Monthly Archives: April 2013
silk colorful star
wimpy kid
Analogies
snake is to hole:bear is to cave
komodo dragon is to desert::polar bear is to arctic
Mt. Vesuvius is to Italy:: Mt. St. Helen’s is to Washington state
Abe is to Lincoln::George is to Washington
astronaut is to space:: pilot is to sky
How Volcanos Form
Volcanoes form inside the earth between the molten iron core and the thin crust there is a solid body of rock called the mantle. When the rock from the mantle melts, moves to the surface through the crust,and releases pent-up gases , volcano’s erupt. Really high temperatures cause the rock to melt ad become liquid rock or magma. Magma that reaches the surface is called lava . Magma can push up under the middle of a lithosphere plate. A lithosphere is the solid outermost shell of a rocky planet. A plate is part of the earth’s crust that has breaks deep in the rocks. Volcanic activity is caused by unusually hot mantle material forming in the lower mantle and pushing up into the upper mantle. The hot mantle material then gets pushed into the cracks of the Earth’s crust which forms a volcano. Volcanoes can be really fierce because of the pressure and heat from the volcano.