1
--- igneous rock is more likey to have coarse-grained texture than --- igneous rock.
intrusive/extrusive
Concrete is composed of rock particles bound together with cement. Thus, concrete is most like a --- rock. (sedimentary or metamorphic)
sedimentary
Which of these causes the breakdown of rock?
a. weathering b. cementing c. stratification d. extursion
weathering
A type of rock that forms deep within the Earth when magma solidifies is called
igneous
The layering that occurs in sedimentary rock is called...
a. foliation b. ripple marks c. stratification d. compaction
stratification
foliated
The --- of a rock depends on the size of its crystals. (texture or composition)
texture
What kind o rock is formed when limestone comes in contact with an igneous intrusion?
Metamorphic
A type of rock that forms under high temperature and pressure but is not exposed to enough heat to melt the rock is ...
Metamorphic
a. obsidian b. sandstone c. limestone d. compaction
sandstone
--- sedimentary rock forms when grains of sand become cemented together.
clastic
Obsidian is one of the --- igneous rocks, which cool very rapidly on the Earth's surface. (igneous or sedimentary)
extrusive
Slate is a rock formed from shale. What type of rock is slate?
metamorphic rock
After they are deposited, sediments, such as sand, are turned into sedimentary rock when they re compacted and ...
cemented
A common sedimentary rock structure is ...
a. sill b. pluton c. cross-bedding d. lava flow
cross-bedding
cools quickly on the earth's surface
lava
The cooling rate of magma affects the properites of --- rock. (igneous or sedimentary)
igneous
Which type of rock cools very slowly?
Coarse-grained granite
An igneous rock with a coarse-grained texture forms when ...
magma cools very slowly.
An example to mafic igneous rock is ...
a. granite b. basalt c. quartzite d. pumice
basalt
Strata are found in --- rock.
sedimentary
Biotite mica is one of the --- metamorphic rocks, which flake off in very thin sheets. (foliated or nonfoliated)
foliated
The individual mineral grains in sandstone hold together because they have been ...
cemented
Describe the differences between the formation of metamorphic and igneous rock.
Igneous rock is formed from molten roclk. It can solidify underground or on the Earth's surface. Metamorphic rock is formed from rock that is under pressure and heated, but not melted.
Describe how the two main types of sedimentary rock are made.
Clastic rock is made of fragments of other rocks and minerals. Chemical sedimentary rock forms when minerals crystalize out of a solution such as sea water.