TEST on earthquakes and volcanoes!?

I have a test and I need some data on earthquakes and volcanoes.

Most occur in plate boundaries. At the boundaries of subduction, the crust of a plate is inserted under the other and melts, forming magma, which can be channeled to the surface forming volcanoes. Subduction also cause great stress to the crust that builds up until it is too and the accumulated energy is released as earthquakes. The most violent volcanoes in these regions.

Composite volcanoes are formed by alternating layers of rock and ash. Violent eruptions occur when gas pressure builds up in the magma chamber, becoming stronger than the rock pressure, pushing down on the camera. The pressure is released and the volcano erupts explosive. At divergent boundaries, each plate is moving away from each other and the flow of magma to the surface in the gap. In mid-ocean ridges and Divisions Thus, shield volcanoes and much softer, which are created by basaltic lava flow and cooling in layers. The gases are released through the lava Instead of building, the eruptions are gentle lava flows. major earthquakes can also transform the way boundaries, where plates move sideways in relation each other.

They result from the most obvious errors, such as California, and have the same accumulation of stress, such as earthquakes in subduction zones, although they are closer to the surface and can be much more serious effect on the volcanoes visible soil. They can also form in "hot spots" in the crust of the earth. The bark is continuous melting and volcanic island arcs like the Hawaiian islands form as the cortex in relation to the access point. Plates may change over time and can form plaques again.

At one point, the North American plate was beginning to break with a crack that was forming in the area of present day Missouri and Tennessee, the New Madrid fault. An error of form and movement of the plate changed so much that he was not pulling away. The error of 'cure' in some way, but not completely, and the Stress can still accumulate, causing violent earthquakes. If an earthquake occurs on the seabed, not only affects the land, but the water around the area, causing a tsunami. Just to give you more information that can explain more clearly the volcanoes (and possibly more accurately) than me, I found a site with a good summary http://mtsu32.mtsu.edu:11407/100volcanoes.html And there's always Wikipedia: http://en.wikipedia.org/wiki/Volcano http://en.wikipedia.org/wiki/Earthquake

Volcanoes

Encyclopedia of Earthquakes and Volcanoes (Facts on Fil $6.36

Encyclopedia of Earthquakes and Volcanoes (Facts on Fil $6.36

Encyclopedia of Earthquakes And Volcanoes (Facts on F.. $14.99

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Volcanoes: Eruptions and Other Volcanic Hazards (The Hazardous Earth) $39.50 Volcanic eruptions are some of the most spectacular of all natural phenomena, yet they are also among the most dangerous geological hazards. Eruptions may send blocks of rock, ash, and gas tens of thousands of feet into the atmosphere, and individual eruptions have been responsible for killing tens of thousands of people. The hazards associated with volcanic eruptions are not limited to the immedi...

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Encyclopedia of Earthquakes And Volcanoes (Facts on File Science Library) $14.99 From aa to Yellowstone, if it's got anything at all to do with earthquakes or volcanoes, you're likely to find within the pages of this updated encyclopedia from science journalist David Ritchie and Rutgers geology professor Alexander Gates. The 1,000-plus alphabetical listings range from historical volcanoes and quakes (both famous and obscure) to entries on specific seismic phenomena (everyth...