A Shadow zone is an area where, for example. Say an earthquake happened at the A point, and at the P-Wave zone underneath it. You can see that the waves would have to go through that. But, since there are shadow zones they can't
Subduction zones are places in he mantle where the magma is stored and is where most volcanoes are formed from.
Cinder is mainly burned pieces of coal or wood chips and comes out of a volcano and makes them very violent cases.
Lava is a substance from the earths core that finds cracks in the earths crust and finds its way to the surface, and comes out through a volcano.
When an object is exactly alike on both sides. Like for example a shield volcano is symmetrical because both sides of the volcano are exactly the same inside and out.
Dormant is when a volcano looks like it is extinct but it actually isn't it is dormant which means it is sleeping but could erupt anytime! for example Mount. St. Helen's is dormant and before its big eruption it was dormant for around 200 years.
A vent is an opening in the volcano, most likely it is the top where all of the magma, lava, or cinder comes out. But, sometimes it has a side vent where magma can come out to.