Types of Volcanos
Type of volcano that are shallow and sloping, they are short and usually very wide
Shield Volcano
What is the underground reservoir of molten rock called?
Magma chamber
What do we call a volcano that is no longer active?
Extinct volcano
What is magma called when it reaches the Earth's surface?
Lava
Hollowed-out cavity lies deep beneath the earth and contains magma and gases.
Magma Chamber
Volcanos that are cone-shaped, and built from cinders falling back into the cone from previous explosions
What is the main tube through which magma travels to the surface?
Conduit
What term describes a volcano that has erupted in recorded history?
Active volcano
What is a hotspot?
A location where magma from deep within the Earth's mantle rises to the surface.
This is the main opening that comes directly up from the conduit from which lava, gas, ash, and other volcanic materials are expelled
Main Vent
What type of volcano is formed from thick lava?
Lava Dome Volcano
What do we call the opening at the top of a volcano?
Crater
What term describes a volcano that has not erupted in a very long time but has the potential to erupt again?
Dormant Volcano
What is one difference between lava and magma?
Lava is magma that has erupted onto the surface; magma is found underground.
They are formed when cracks or dikes branch off the main conduit and then open at the surface of the side of a volcano.
Side Vents
A very tall cone-shaped volcano is built from several layers of lava, pumice, ash, and tephra.
Composite volcano
Name the solid rock formations that can block magma flow.
Dikes
The discharge of lava, ash, and gases from a volcano is referred to as...
Eruption
How do hotspot volcanoes differ from other volcanoes?
They can form in the middle of tectonic plates rather than at plate boundaries.
What flows out of volcanos?
ash and lava
What is one example of a composite volcano?
Mount Saint Helens
What is an ash cloud?
A cloud of ash particles released during an explosive volcanic eruption.
What is the difference between dormant and extinct volcanoes?
Dormant volcanoes have the potential to erupt again, while extinct volcanoes are not expected to erupt again.
What state in the US is known for its famous hotspot volcano?
Hawaii
During eruption water vapor, gas, dust, rocks, minerals, volcanic glass, and other debris is emitted inot the air like a cloud, this is known as a?
Ash Cloud