Rocks Question Preview (ID: 47391)


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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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