Rocks A
Heat and pressure deep beneath the earth's surface can change any rock into:
metamorphic rock
Rock that forms from the cooling of magma or lava is called:
The texture of an igneous rock that has large crystals scattered on the background of much smaller crystals is called:
Geologists classify metamorphic rocks according to:
the arrangement of the mineral grains in the rock
The process in which sediment settles after water or wind carry it is called:
deposition
Rock that forms on the surface of the Earth when lava cools is called:
extrusive igneous rock
This is the most common coarse-grained, intrusive igneous rocks:
granite
Which step in the rock cycle would be required to change granite (igneous rock) into sandstone (sedimentary rock):
weathering wears down granite into sediment
The process in which water carries away rock fragments:
weathering and erosion
The texture of a metamorphic rock that has grains arranged in parallel layers is called:
foliated
Three types of sedimentary rock are:
clastic, chemical, organic
Where does most metamorphic rock form:
deep beneath earth's surface
What are the steps of sediments to sedimentary rock:
weathering/erosion, deposition, compaction, cementation
Which step of the rock cycle glues particles of sediment together:
cementation
Large crystals where you can tell the colors apart on an igneous rock indicates:
intrusive igneous rock
Which rocks cool lava at an extremely rapid pace in which no crystals are formed:
rock with glassy texture
The presence of either shiny crystals OR gas bubbles in a rock indicate that it is:
igneous rock
A rock that breaks easily, or has fossils, indicates that it is:
sedimentary rock
An example of an organic sedimentary rock is:
coal
Which type of sedimentary rock forms from the evaporation of water containing minerals:
chemical
Which characteristic makes marble a useful metamorphic rock?
it is easily cut into thin slabs and polishes well
How could metamorphic rock become magma:
melting
What step in the rock cycle creates sedimentary rock?
compaction and cementation
How can a sedimentary rock turn directly into an igneous rock:
melting and cooling
Can sediments turn into metamorphic rock:
no