Question+1

Most volcanos form around the boundaries of a plate,where the ocean plates sink, under other plates. As a plate sinks under another, in to the subdution zone, ( a subduction zone is a very deep spot in the ocean. Like a sumbmarine, sub means under) the heat underneith the earth is so hot, it melts the plate and it tuns it in to magma. If the magma reaches the surface, it can build volcanic mountains.


 * Describe the parts to a volcano (magma chamber, pipe, vent, crater)

The magma chamber, is a at the bottom of the volcano, that holds all the magma. The vent is the place were the magma has reached earth's surface. The pipe is usualy connected to the main part in the volcano.

Magma is melted rock inside the earth. Magma also contains gases, that expands as the magma rises up.When the magma is on earth's surface, it is now lava. So, pretty much, lava is magma but, lava is on earth's surface. Magma is below.
 * Explain the difference between lava and magma.
 * How does magma reach the earth’s surface?