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How are igneous rocks formed?
glassy
the rapid release of numerous gas bubbles during cooling
intrusive and extrusive
pegmatitic
It has a glassy appearance
at or near the Earth's surface
by composition and texture
from the cooling & hardening of molten material
What is NOT a characteristic of granite, a common intrusive igneous rock?
glassy
the rapid release of numerous gas bubbles during cooling
intrusive and extrusive
pegmatitic
It has a glassy appearance
at or near the Earth's surface
by composition and texture
from the cooling & hardening of molten material
Where are extrusive rock formed?
glassy
the rapid release of numerous gas bubbles during cooling
intrusive and extrusive
pegmatitic
It has a glassy appearance
at or near the Earth's surface
by composition and texture
from the cooling & hardening of molten material
What type of intrusive igneous rock texture has the largest crystals?
glassy
the rapid release of numerous gas bubbles during cooling
intrusive and extrusive
pegmatitic
It has a glassy appearance
at or near the Earth's surface
by composition and texture
from the cooling & hardening of molten material
What type of texture results when extrusive igneous rock cools so quickly that crystallization does not occur?
glassy
the rapid release of numerous gas bubbles during cooling
intrusive and extrusive
pegmatitic
It has a glassy appearance
at or near the Earth's surface
by composition and texture
from the cooling & hardening of molten material
What condition causes pumice to be so porous?
glassy
the rapid release of numerous gas bubbles during cooling
intrusive and extrusive
pegmatitic
It has a glassy appearance
at or near the Earth's surface
by composition and texture
from the cooling & hardening of molten material
How are igneous rocks classified in general?
glassy
the rapid release of numerous gas bubbles during cooling
intrusive and extrusive
pegmatitic
It has a glassy appearance
at or near the Earth's surface
by composition and texture
from the cooling & hardening of molten material
What are the two ways the igneous rock are classified?
glassy
the rapid release of numerous gas bubbles during cooling
intrusive and extrusive
pegmatitic
It has a glassy appearance
at or near the Earth's surface
by composition and texture
from the cooling & hardening of molten material
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