Plate boundaries are where the action is ... Use Graphic 2 to discuss convergent, divergent, and transform boundaries. Explain why each of these boundaries has the particular observable phenomena ...

Whatever drives the movement, plate tectonic activity takes place at four types of boundaries: divergent boundaries, where new crust is formed; convergent boundaries, where crust is consumed ...

These convergent boundaries also occur where a plate of ocean dives ... that eventually build up into island arcs like Japan. At divergent boundaries in the oceans, magma from deep in the ...

This is called a destructive or convergent plate boundary ... This is called a constructive or divergent plate boundary. These are usually found under oceans. As the plate moves apart, magma ...

When the plate sinks into the mantle it melts to form magma. The pressure of the magma builds up beneath the Earth's surface. The magma escapes through weaknesses in the rock and rises up through ...

For more on divergent boundary, go to The Sea Floor Spread. Also known as subduction boundary, a convergent boundary occurs where one plate slides under another as the two are pushed together.