Seismographs record the ____________ _____________ produced by earthquakes.
Shock waves
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What is magma?
This magma is very hot, melted rocks. Magma is what we call lava when it comes out of volcanoes!
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The strength of an earthquake is measured in ______________________.
Magnitude (using the richter scale)
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What is a composite volcano?
These volcanoes emit both lava and solid materials but not at the same time. During one eruption it will emit lava and then at the next it will emit ashes and c
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What is the name of the machine that measures the magnitude of an earthquake?
Seismograph
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What is the name of the volcano that erupted in Washington State in 1980?
Mount Saint Helens
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What substances can come out of a volcano when it erupts?
lava, gases, ashes and cinders
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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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What is GEOLOGY?
the study of the earth
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What is a fault?
The place where the plates meet and crack are called faults.
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Describe the MANTLE of the earth's layers.
The mantle is the layer below the crust.The rock in this layer is not hard, solid rock though. The mantle is like a thick, hot soup containing a mixture of rock
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How is a dome mountain formed?
Dome Mountains are formed from hot molten material (magma) rising from the Earth's mantle into the crust that pushes overlying sedimentary rock layers upward to
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How are Fold Mountains formed?
Fold mountains are created where two or more of Earth's tectonic plates are pushed together.