Photographic EvidenceSubduction Zone

Photograph: Taken by a cameraDiagram: Formation

 Photograph: Volcanic Arc formed by magma that rises from the melting of the falling plate.

Diagram: volcanic arc located at continental crust, it close to ocean trench.

 Photograph: this is shield volcano, broad, gently sloping volcano formed by quiet eruptions of lava.

 Diagram: When gas gets more and more under the ocean crust, then it will make a earthquake and volcano island will be created at the middle of the ocean.

Trench

Cause- when two plates squished together which is oceanic and continental, it causes to create a trench.

Effect- effect of the trench is that it’s good for the sea animals or for sea insects to hide under the ocean trench.

 Volcanic Arc

Cause- oceanic plate subducts the continental plate, and it causes the oceanic plate to melt.

Effect- when the oceanic plate goes down, it pushes the continental plate, which is helping the magma to rise up.

Island Arc

Cause- when gas heats up under the ocean it make an a volcano and earthquake. Or when convergent boundary happens

Effect- is when volcano dies, we call that a island.

Analysis

The convergent boundary makes a Island arc, Volcanic arc, and a trench. Volcanic arc happens when oceanic and continental squished together, oceanic plate weights more dense and it goes down under the continental plate, and continental plate goes top of the oceanic, and between then it creates a trench. When oceanic plate goes under the ocean, oceanic plate pushes the magma where it in under the continental plate and helps to push up the magma to make a volcanic arc. Island arc is also same posses as the volcanic arc, but it happens middle of the ocean, when oceanic and oceanic boundary happens. When earthquake happens in middle of the ocean it makes a volcano and when volcano dies, it will be a island.