A volcano that is not currently active is called this
What is dormant
100
the 3 types of volcanoes
What is cinder-cone, shield, composite
100
this forms when a batholith or a small body of hardened magma is uplifted towards the surface, forcing rock above to to bend into a dome shape
What is a dome mountain
100
eruptions can either be one of these 2 things
What are explosive or quiet
100
a substance that cannot be broken down
What is an element
200
A volcano that is sometimes erupting smoke, steam,
ash, cinders, and flows of lava
What is Active
200
this type of volcano has gently sloping sides
What is shield
200
these are the largest rock bodies. They form when magma cools underground without reaching surface and can form the core of mountain ranges.
What are Batholiths
200
how a volcano erupts depends on these factors
What is the amount of silica content in the magma, the magma's viscosity, and how much gas pressure has built up
200
a substance made of two or more elements
What is a compound
300
Magma is slowly forced upward and flows out through an opening called this
What is a vent
300
this type of volcano is formed by erupted lava that covers a layer of ash & cinder over and over again
What is composite
300
Magma that squeezes into vertical cracks in rock below the surface and then hardens is called this
What is a dike
300
Magma that has little silica produces these type of eruptions
What is quiet, nonexplosive eruptions with low viscosity lava
300
a property that can be observed and measured without changing the composition of the substance
What is a physical property
400
The steep walled depression around the volcano’s vent is called this
What is crater
400
this type of volcano forms when ash, cinder, and volcanic bombs fall to the ground it forms a steep sided, loosely packed volcano
What is cinder cone
400
Magma that is squeezed into a horizontal crack between rock layers and hardens is called this
What is a sill
400
this type of flow occurs when an explosive eruption hurls out a mixture of hot gases, ash, cinders, and bombs.
What is a pyroclastic flow
400
any property that produces a change in the composition of matter
What is a chemical property
500
name the 3 different ways a volcano can form based on plate tectonic concepts
plates moving toward each other (convergent boundaries), plates moving away from each other (divergent boundaries), hot spots
500
Mount St. Helens or Mount Shasta are examples of this type of volcano
What is composite
500
Ship Rock in New Mexico is an example of a solid, igneous core of a volcano left behind when a volcano stops erupting and the softer cone erodes away is called this
What is a volcanic neck
500
name and describe the 2 types of lava that might be produced from a quiet eruption
What is pahoehoe (fast flowing, low viscosity, hot, runny lava) and aa (higher viscosity than pahoehoe, cooler, more chunky)
500
a physical property of liquid that describes its resistance to flowing