Volcano Formation
What do we call molten rock beneath Earth's surface?
Magma
Volcanoes forming at a Mid-Ocean Ridge are forming at what boundary?
Divergent Boundary
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Tall volcanoes with alternating layers of ash and lava are called what?
Composite Volcanoes
Dust and ash entering the atmosphere as a result of volcanic eruptions can lower Earth’s ______________?
Temperature.
What process caused the Hawaiian Islands?
Tectonic plates shifting over a hot spot in the crust.
When magma rises and reaches the Earth's surface, we call it...
Lava
What process is occurring as the lithosphere sinks below the crust at a convergent boundary?
Subduction
When ash, cinders, and bombs build up in a steep pile around a volcano's vent, the result is called a what?
Cinder Cone Volcanoes
Which type of lava flow has a rough, jagged surface that is difficult to walk on?
Are volcanoes CONSTRUCTIVE or DESTRUCTIVE forces?
Constructive.
Volcanoes often form along...
Plate Boundaries
Name the type of plate boundary where two plates collide and one sinks beneath the other.
Convergent Boundary
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Magma sometimes forces its way out of the side of a volcano through a feature called a what?
Side Vent
Which type of lava flow has a smooth, ropy surface texture?
Pahoehoe
Name one adult that works in the principal's suite.
Mr. McPartland
Mrs. Grant
Mrs. LaPlant
Mrs. Beaney
Subduction occurs when what happens?
One tectonic plate is forced underneath another tectonic plate.
SPECIFICALLY OCEANIC UNDER CONTINENTAL.
Why are there so many volcanoes surrounding the Pacific Ocean? (Ring of Fire)
The Pacific Plate is constantly moving causing volcanic activity along the boundary.
A pyroclastic flow typically occurs during what type of eruption?
Explosive
Why are pyroclastic flows considered one of the most dangerous volcanic hazards?
- Can reach very high temps. (1,800 F)
- Can move at speeds up to 500 mph.
- They cause breathing and visual issues.
- They are extremely hard to escape.
What type of boundary created the Adirondack Mountains?
A convergent boundary.
As the continents pulled away, the continents stretched and caused magma to push upwards forming dome mountains.
Why do volcanoes form so easily at subduction zones?
The crust that is being forced down is easily melted causing magma to rise to the surface.
Which boundary is responsible for creating island arcs?
Convergent Boundaries
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Pahoehoe and Aa are two forms of lava _________.
What type of eruption causes these?
Lava FLOWS.
Quiet Eruptions.
What is the #1 hazard safety plan for any volcanic eruption?
Have an evacuation route in place.
How many school days are there until Winter Break?
7 school days