Chapter 4: Magma and Igneous Rocks
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17 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The difference between lava and magma is that.
magma is light in color, and lava is dark
magma usually has a mafic composition, and lava usually has a felsic composition
magma is found beneath the Earth’s surface, whereas lava has reached the surface
magma flows more quickly than lava
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A blob-like igneous rock body that has cooled beneath the surface of Earth is called a.
guyot
pluton
lava flow
andesite
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A dike is.
a sheetlike intrusion that lies parallel to surrounding layers of sedimentary rock
a cooled layer of lava
an intrusion formed within the magma chamber of a volcano
a sheetlike intrusion that cuts across preexisting layers
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A sill is.
a sheetlike intrusion that lies parallel to surrounding layers of sedimentary rock
a cooled layer of lava
an intrusion formed within the magma chamber of a volcano
a sheetlike intrusion that cuts across preexisting layers
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Igneous rocks.
are formed through the freezing of melt
can be produced at the surface of the Earth as well as deep below the surface
are the most common type of rocks within Earth
all of the above
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Very early in Earth’s history, it was so hot that the surface was likely entirely molten.
True
False
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When magma crystallizes, are formed.
intrusive igneous rocks
extrusive igneous rocks
volatiles
pyroclastic debris
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