What is it called when the magma flows though the rock layers that make up the volcano?
This is called a DIKE.
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15
What are continental plates?
Continental plates are pieces of the earthโs crust that are above magma.
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10
The strength of an earthquake is measured in ______________________.
Magnitude (using the richter scale)
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10
What is the name of the machine that measures the magnitude of an earthquake?
Seismograph
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10
What substances can come out of a volcano when it erupts?
lava, gases, ashes and cinders
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10
Seismographs record the ____________ _____________ produced by earthquakes.
Shock waves
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15
Name the 4 layers of the earth
Crust, mantle, Outer Core, Inner Core
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10
What is a cinder cone volcano?
These volcanoes emit mostly ash and cinders so they usually have steep slopes and they are not very large.
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15
What is the name of the volcano that erupted in Washington State in 1980?
Mount Saint Helens
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15
Describe the inner core of the earth's layers.
This is the very center of the earth and is basically an iron ball that is about 870 miles across (diameter). The temperature of the inner core is about 11,000
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5
What is the magma called after it rises from the earth's mantle and comes out of a volcano?
lava
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10
The ____________ is the place on the earthโs surface directly above the focus.
Epicenter
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10
What is a shield volcano?
This type of volcano is built up from smooth flows of lava rather than violent explosions so it has a dome like shape.