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Volcanic Eruptions
Volcanoes' Effects on Earth
What causes volcanoes?
Vocab
Types of Volcanoes
100
______ flows come from non-explosive volcanoes
What is lava
100
in 1991 Mount __________ erupted in the Philippines
What is Pinatubo
100
_________ volcanoes have not erupted in recorded history
What is extinct
100
Funnel shaped pit at the top of most volcanoes
What is crater
100
Bonus: What is the square root of 25
What is 5
200
Explosive eruptions shoot out ________ ________ and ash.
What is pyroclastic material
200
Large scale eruptions can block sunlight leading to a _______ climate.
What is cooler
200
A rift forms at what type of plate boundary
What is divergent
200
Rock fragments creates by explosive eruptions
What is pyroclastic material
200
Mt. St Helens is an example of a __________ volcano
What is composite
300
_________ __________ are the largest pieces of pyroclastic material.
What are volcanic blocks
300
Massive outpourings of lava resulting in massive flat landforms
What is a lava plateau
300
_____ _______ are places on Earth's surface that are directly above columns of rising magma
What are hot spots
300
A mountain that forms when magma is forced to the Earth's surface
What is a volcano
300
Sometimes referred to as stratovolcanoes
What are composite volcanoes
400
______ lava forms when lava erupts under water.
What is pillow
400
Volcanoes which erupt both lava and pyroclastic material
What are composite volcanoes
400
The movement of one tectonic plate under another is called
What is subduction
400
Empty magma chamber that has collapsed
What is a caldera
400
Volcanoes built out of layers of lava from repeated non-explosive eruptions
What are shield volcanoes
500
Magma containing water or ________ cause a volcano to erupt explosively
What is silica
500
_________ are generally much larger than craters
What are calderas
500
________ volcanoes are in the process of erupting or showing signs of erupting soon
What is active
500
A deep crack formed as tectonic plated separate
What is a rift
500
Small volcanoes made entirely of pyroclastic material
What is a cinder cone