volcanoes

o is a mountain that forms when layers of lava and volcanic ash erupt and build up

Rising magma eventually can lead to an eruption, where magma , solids, and gas are spewed out to form cone- shaped mountains called

As magma flows onto Earth ‘s surface through vent , or opening, it is called

Volcanoes have circular holes near their summits called

Active volcanoes sometimes spew

is a mixture of rock, mineral, and glass particles expelled from a volcano during a volcanic eruption

are chimneys formed from deposits of iron sulfide, which is black

are chimneys formed from deposits of barium, calcium, and silicon, which are white

The 'smoke' you see billowing out of a volcano is actually a mix of mostly

In _, _ _ _ _ _ _ _ erupted.