Igneous Rock Characteristics
Igneous Rock Formations
Types of Volcanoes
Volcano Hazards
Famous Volcanoes
100
Cooled lava outside the Earth is considered ___________.
What is extrusive?
100
Mafic lava creeping across Earth's surface is known as a ___________.
What is lava flow?
100
Large, wide volcanoes with a gentle slope with peaceful mafic eruptions.
What is a shield volcano?
100
This volcanic hazard is most dangerous in a small area and is primarily water vapor with some carbon dioxide and sulfur.
What are volcanic gases?
100
true or false: The Yellowstone Volcano is over a continental hotspot.
What is true?
200
This type of igneous rock is light-colored containing mostly silica.
What is felsic?
200
Magma that pushed into a horizontal crack between sedimentary rock layers creates a ______________ when solidified.
What is a sill?
200
These usually form a plug in the crater of stratovolcanoes.
What is a volcanic dome?
200
This volcanic hazard is a fast-moving cloud denser than the surrounding air that can destroy buildings, and cause suffocation and burns.
What is a pyroclastic flow?
200
Mount St. Helens is an example of this type of volcano.
What is a stratovolcano?
300
Magma cooled inside the Earth is considered ___________.
What is intrusive?
300
A cooled magma chamber deep within Earth's crust is a _________.
What is a pluton?
300
Medium-sized volcano with steep sides that has a large explosive eruption.
What is a stratovolcano?
300
This volcanic hazard moves very slowly causing primarily property damage.
What is a lava flow?
300
The Hawaiian Islands are examples of this type of volcano.
What are sheild volcanoes?
400
Mafic lava flows like ________ while felsic lava flows like ____________.
What are a milkshake and peanut butter?
400
Magma that has pushed into a vertical crack and solidified is called a _________.
What is a dike?
400
Small piles of pyroclasts on the side of a shield volcano that release gas and "spit" lava are called a ________________.
What is cinder cone?
400
This volcanic hazard ranges in size from fine ash to the size of boulders causing property damage and breathing problems near the volcano and miles away.
What are pyroclasts?
400
The Aleutian Islands are a volcanic chain off of this American State.
What is Alaska?
500
This type of rock is dark-colored with only a little silica.
What is mafic?
500
This is created after a supervolcano erupts and the magma chamber sinks.
What is a caldera?
500
The Yellowstone Caldera is an example of this type of volcano.
What is a supervolcano?
500
This volcanic hazard is a volcanic mudflow created when pyroclasts and ash mix with heavy rain, rivers, or melted glaciers.
What is a lahar?
500
Mt. Vesuvius covered this Roman city in Italy.
What is Pompeii?