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What is a Volcano
What is formed
Parts of a volcano
Misc
Causes and Effects of Volcanoes
100
What is a volcano?
What is a vent or fissure in the Earth's surface through which magma and gasses are expelled.
100
The depression created when the roof of a magma chamber collapses.
What is a Caldera
100
Molten rock deep underground often gathers in a
What is a Magma chamber
100
The volcanoes of Hawaii and other places that form far from tectonic plate boundaries.
What are Hot Spots
100
A tiltmeter is an instrument that measures?
What is the change in a volcanoes shape.
200
The three major types of volcano are?
What are Shield, Cinder Cone, and Composite or Strata
200
The pyroclastic material that can reach the upper atmosphere and circle the Earth for years.
What is Volcanic Ash
200
An opening on Earth's surface through which Volcanic materials erupt.
What is a Vent
200
Where Volcanoes are most likely to form.
What is along plate boundaries
200
If the water content of the magma is high the eruption will.
What is be an explosive eruption
300
A small volcano that usually erupts only for a short time and erodes quickly.
What Cinder Cone volcanoes
300
Cool stiff lava that froms jumbled heaps of sharp chunks near a volcanoes vent.
What is Blocky Lava
300
A cloud that froms in the air after some volcanic eruptions.
What is an Ash Cloud
300
When talking about the viscosity of lava, you are talking about what?
What is how the lava flows.
300
Give two major cues that a volcano is about to erupt.
What are increase of amount and intensity of earthquakes, increase of gases released by the volcano, a change in the slope of the volcano, and increase of the tempreature of the ground of the volcano.
400
The kind of volcano that is created by a combination of explosive and nonexplosive eruptions.
What are Composite Volcanoes or Stratvolcanoes
400
The type of lava that flows mist like dripping wax.
What is Pahoehoe Lava
400
A passage through which magma flows in a volcano.
What is Conduit
400
Rock begins to melt when...
What is temperature decreases and pressure incresases.
400
How does a volcano affect the climate of the Earth?
What is the pyroclastic material, ASH, goes into the atmosphere and blocks out the sun decreasing the tempreature.
500
Volcanoes that are built by layer of lava being released by repeated nonexplosive eruptions.
What are Shield Volcanoes
500
A large flat area covered by lava that has hardened and can be very thick.
What is a Lava Plateau
500
Molten rock on the Earths surface.
What is Lava
500
What are the three categories of volcano and what do each of the categories mean.
What is Extinct= havn't erupted in the recorded past and probably won't in the future, Dormant=haven't erupted recently but could in the future, and Active= erupting now.
500
What are two reasons why pyroclastic flows are super dangerous
What are very hot material, they move very fast, and they are full of ash.