Volcanoes and Plate Tectonics
Properties of Magma
Volcanic Eruptions
Volcanic Landforms
This and That
100
It is a weak spot in the crust where molten material or magma comes to the surface.
What is a volcano?
100
It is a substance that cannot be broken down into other substances.
What is an element?
100
It is a long, thin tube that connects the magma chamber to the surface of the Earth.
What is a pipe?
100
This type of volcano has slowly moving lava that builds a gently sloping mountain.
What is a shield volcano?
100
It is Europe's largest volcano.
What is Mount Etna?
200
It is a molten mixture of rock-forming substances, gases, and water from the mantle.
What is magma?
200
When two or more elements are chemically combined and take on new characteristics.
What is a compound?
200
Quiet volcanic eruptions are characterized by this.
What is low silica magma?
200
Mount St. Helens is an example of this type of volcano.
What is a composite volcano?
200
It marks a major hot spot underneath the North American plate.
What is Yellowstone National Park?
300
It is a major volcanic belt formed from the many volcanoes which rim the Pacific Ocean.
What is the Ring of Fire?
300
Any characteristic of a substance that can be observed or measured without changing the composition of that substance.
What is a physical property?
300
High viscosity magma which is thick and sticky causes this to happen.
What is an explosive eruption?
300
These volcanoes have high viscosity magma and build mountains with steep sloping sides.
What is a cinder cone volcano?
300
It is a fast-moving type of lava that has low viscosity and that forms wrinkles, billows and rope-like coils.
What is pahoehoe?
400
A string of islands formed by volcanoes.
What is an island arc?
400
The resistance of a liquid to flowing.
What is viscosity?
400
It is a huge hole left by the collapse of a volcanic mountain.
What is a caldera?
400
It is a huge hole left by the collapse of a volcanic mountain.
What is a caldera?
400
It was the first well-documented large eruption of a volcano due to the recent invention of the telegraph.
What is Krakatau?
500
Where magma erupts through the crust and reaches the surface of the Earth by way of a volcano.
What is a "hot spot"?
500
The viscosity of magma depends on these TWO things.
What is silica content and temperature?
500
It is when an explosive eruption hurls out a mixture of cinders, ash, bombs, and gases that travels so fast that you cannot outrun it.
What is a pyroclastic flow?
500
It is formed when a large body of magma cools inside the crust and is eventually pushed to the surface.
What is a batholith?
500
This country harnesses its many volcanoes to produce heat for homes and to turn turbines for the production of electricity.
What is Iceland?
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