Earth Science Chapter 12 - Volcanoes

A steep walled hole that forms around the vent of a volcano

Which describes bits of material that fall to Earth after an eruption? 

A large hole in the ground formed from top of volcano collapsing into magma chamber

Explosive w/ rock & lava thrown into the air - fall back to make a loosely packed volcano

Molten rock that is ON Earth's surface is called...

What is magma that hardens in a crack cutting across rock layers called? 

Molten rock that is BELOW Earth's surface is called...

A __________ has quiet eruptions with thin, basaltic lava, and is gently sloped

A ____________ is the opening where lava flows out to surface

Magma that is low in silica generally produce what kind of eruptions?

What is the largest intrusive igneous rock body? 

What type of boundary is associated with composite volcanoes? 

A ________ has quiet & explosive volcanoes w/alternating layers of loose and packed rocks;

Why is Hawaii made of volcanoes? 

Rock bodies that are formed when magma bodies are forced up & solidify before reaching surface

What is made entirely of tephra?

What kind of magmas produce violent volcanic eruptions?

A ____________ is a place where volcanoes form far from the plate boundary