Show:
Plate Tectonics
Parts of a Volcano
Types of Volcanoes
Properties of Magma
Volcanic Eruptions
100
At this type of plate boundary, two plates slide passed each other. Earthquakes occur here.
What is a transform boundary?
100
Magma becomes lava when it reaches the ________ of the volcano.
What is vent?
100
This type of volcano is a wide and gently sloping mountain.
What is a shield volcano?
100
_______ is the resistance of a liquid to flowing.
What is viscosity?
100
Geologists classify volcanic eruptions as quiet or __________.
What is explosive?
200
At this type of boundary, two plates move apart, creating valleys, volcanoes, and sea-floor spreading.
What is a divergent boundary?
200
The magma moves upward through a _________, or long tube in the ground that connects the magma chamber to the Earth's surface.
What is pipe?
200
This type of volcano is tall, and cone-shaped with alternating layers of lava and ash.
What is a composite volcano?
200
Is viscosity a physical or chemical property of magma?
What is physical?
200
This type of volcano is unlikely to erupt again.
What is extinct?
300
At a convergent boundary, two plates collide, forming what?
What is a mountain?
300
Beneath a volcano, magma collects in a pocket called a ___________.
What is magma chamber?
300
This type of volcano is built up around a vent by ash, cinders, and bombs that form a steep, cone-shaped hill or small mountain.
What is cinder-cone?
300
The greater or higher the viscosity of a liquid, the _______ it flows.
What is slower?
300
This type of volcano is like a sleeping bear... it may awaken in the future and become active again.
What is dormant?
400
At these two types of plate boundaries volcanoes can form.
What is divergent and convergent?
400
A _____ is the area covered by lava as it pours out of a vent.
What is lava flow?
400
An example of another landform created by a volcano
What is a lava plateau, a dike, a sill, a batholith, or a dome mountain? (1)
400
This type of lava has low viscosity.
What is Pahoehoe?
400
This type of volcano is erupting or shows signs of erupting in the near future.
What is active?
500
A volcano forms above a _______ when magma erupts through the crust and reaches the surface.
What is a hot spot?
500
A ________ is a bowl-shaped area that may form at the top of a volcano around the central vent.
What is crater?
500
The Hawaiian Islands are an example of this type of volcano.
What is shield?
500
The (more/less ) silica a magma contains, the higher its visocsity.
What is more?
500
BONUS: Which is more likely to be dangerous-a volcano that erupts frequently or a volcano that has been inactive for a hundred years? Why?
What is anything reasonable?