Inside the Volcano
Hitting the Top
More mountains and Volcanoes
"S'' Alphabetical order Vocabulary
Review { Plates Rocks Earthquakes Volcanoes}
100
The hot, liquid rock that is found in the center of the earth.
What is Magma
100
A bowl shaped area that formed around a volcano's central opening
What is crater
100
The ring of volcanoes that circle the Pacific Ocean from the tip of South America, along the west coast of the U.S., through Alaska and the Kamchatka Peninsula, down through Japan, Indonesia, and the islands in the South Pacific.
What is Pacific Ring of Fire
100
an underwater mountain that rises at least 1000 meters above the sea floor. Some seamounts rise above the water's surface. Most seamounts are volcanic in orgin; only a few are non-volcanic (caused by uplifting).
What is sea mount
100
rock is rock that has formed from sediment.
What is Sedimentary Rock
200
The pocket beneath a volcano where magma collects
What is Magma Chamber
200
The area covered by lava as it pours out of a volcano's vent
What is Lava Flow
200
the northern part of the Pacific Ring of Fire. The Aleutian Arc extends 1,500 miles westward to Kamchatka and forms part of the Pacific Ring of Fire. Almost all of Alaska's volcanoes are located along this arc.
What is Aleutian Arc
200
a very common mineral composed of silicon and oxygen (SiO2). Silicates make up about 95% of the Earth's crust.
What is Silica
200
rocks that have formed (and cooled slowly) beneath the surface of the Earth.
What is Igneous Rock OR Intrusive Rocks
300
A mountain composed of cooled lava built up by repeated eruptions.
What is Volcano
300
Liquid magma that reaches the surface as the rock formed when liquid lava hardens
What is Lava
300
Large cone-shaped mountains with steep sides. Eruptions from composite cones are violent, sending up volcanic bombs, cinders, and ash. A quiet volcanic flow usually follows the explosion and helps to build up the mountain. Mount St. Helen's in Washington and Mount Vesuvius in Italy are examples of composite cone volcanoes.
What is Composite Volcanoes
300
a composite volcano
What is Strato Volcano
300
supercontinent consisting of all of Earth's land masses. It existed during the Permian and Jurassic period.
What is Pangea
400
The opening in the earth that allows the magma to flow out on the earth's surface.
What is Vent
400
scientists who study volcanoes. They monitor volcanoes to try to warn people when eruptions are about to occur and to learn more about how the earth works.
What is Volcanologists
400
A volcano that covers a large area, is dome-shaped, and has gently sloping sides. The lava is dark, thin, and runny so it flows quietly from the vent. Mauna Loa in Hawaii is an example of a shield volcano. Mauna Loa also is the largest volcano on earth. It makes up about 1/2 of the area of the island of Hawaii.
What is Shield Volcano
400
phenomenon in which one part of the Earth's crust (a plate) is pushed underneath another plate as two plates collide. The descending crust melts as it is pushed deep into the Earth's mantle. Subduction destroys crust and recycles it back into the mantle.
What is Subduction
400
a large depression formed from a collapsed volcano.
What is Caldera
500
a long tube through which magma moves from the magma chamber to Earth's surface
What is Pipe
500
an opening in the side of a volcano through which volcanic materials (like lava, gases, and pyroclastic debris) erupt.
What is a Side Vent
500
Small mountains with steep sides that blow cinders and rock particles into the air when they erupt. Paricutin in Mexico is an example of a cinder cone
What is Cinder Cone
500
an enormous volcano that is an order of magnitude larger than ordinary volcanoes. A supervolcano occurs when a huge magma chamber in the Earth's crust erupts after being under great pressure, causing a large caldera to form as the land over the magma chamber collaspses.
What is Super Volcano
500
a volcano that is not likely to erupt again.
What is Extinct Volcano
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