Rocks Question Preview (ID: 47391)
Rocks.
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As the water content of rock increases, the melting point _
a) first increases, then decreases
b) remains the same
c) decreases
d) increases
A model that illustrates the predictable patterns of mineral formation from cooling magma is ____
a) Bowen's reaction series
b) crystal separation
c) layered intrusion formation
d) mineral composition
Intrusive igneous rocks form ____.
a) fine-grained rocks
b) when a molten mass of rocks cools quickly
c) on Earth's surface
d) coarse-grained rocks
Rocks are formed when magma ____.
a) erodes
b) undergoes radioactive decay
c) crystallizes
d) weathers
Igneous rocks that cool slowly beneath Earth’s crust are ____.
a) extrusive
b) intrusive
c) sedimentary
d) always magnetic
Igneous rocks that cool quickly on Earth’s surface are ____
a) extrusive
b) intrusive
c) metamorphic
d) always magnetic
Extrusive rocks, which cool more rapidly than intrusive rocks, are generally more ____
a) coarsely grained
b) finely grained
c) radioactive
d) magnetic
Factors that affect a rock’s melting point include ____
a) pressure and water content
b) value as a gem
c) rarity
d) usefulness as a building material
Valuable ore deposits and gem crystals are often associated with ____.
a) oceans
b) oil deposits
c) thin crustal areas
d) igneous intrusions
What type of sediment particles have worn surfaces and rounded corners?
a) sorted
b) unsorted
c) clastic
d) dissolved
What type of bedding has the heaviest and coarsest material is on the bottom?
a) graded
b) clastic
c) cementation
d) metamorphic
What type of sedimentary rock is coarse-grained with angular fragments
a) foliates
b) nonfoliates
c) conglomerates
d) nonofoliates
What results when rocks come in contact with molten rocks such as those in an igneous intrusion?
a) precipitation
b) regional
c) contact metamorphism
d) hydrothermal metamorphism
The metamorphism of limestone results in the formation of ____.
a) quartzite
b) marble
c) gneiss
d) silver
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