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Rock Test Review

Igneous rock forms in regions where rock is _____ to melting point then cooled to a solid. heated
Sedimentary rocks can have layers of different colors; this _____ when different minerals are deposited at different times. occur
Sedimentary rocks will most likely _____ an environment where particles of rocks are accumulating. form
Igneous rocks form from the processes of _____ and solidification. crystallization
Metamorphic rocks form from the process of _____ pressure. extreme
Scientists classify rocks into the categories of igneous, metamorphic, and sedimentary based on their _____. formation
Metamorphic rock forms where any kind of rock is _____ by the extreme heat and pressure. changed
The presence of igneous rocks _____ be evidence of volcanos. might
A rock that has been formed as the result of liquid rock being ejected from a volcano is an _____ rock. igneous
Cementation is one of the _____ processes in the formation of sedimentary rock. final
The interlocking crystals on an igneous rock that helps classify it is that the crystals are a result of melted rock that has _____. cooled
The primary process that turns sediments into sedimentary rock is the upper _____ of sediment, pressing down on lower layers of deposited sediment. layers
Metamorphic rocks are different from igneous rock and sedimentary rocks in that metamorphic rocks form from _____ rock that has been changed. existing
Igneous rock and metamorphic rocks have similar formation, in that they both _____ extreme heat. require
One of the early steps in the formation of sedimentary rock is _____ of existing rock. weathering
Sedimentary rock can be changed into igneous rock if _____ are melted. sediments
Igneous rock can be changed into sedimentary rock when igneous rock are weathered and the _____ deposited. fragments
In order for a rock to be _____ as igneous, liquid rock must have changed its physical state during formation. classified
Igneous and sedimentary rocks could _____ be changed into metamorphic rock if they are changed by pressure. each
Geologists might recognize a metamorphic rock by _____, wavy layers because they were caused by pressure and heat. distorted
Sedimentary rock _____ be classified by using the evidence of being formed by melting rock. cannot
Sedimentary rocks often contain _____ layers because they are formed by the deposition of sediment. horizontal
The melting of rock deep underground is _____ one of the processes by which sedimentary rock is formed. not
Sedimentary rock can be changed into metamorphic rock if it is ______ to extreme heat underground. exposed
Fossils are found in ______ rock. sedimentary
Rock that is formed by _____ and layering of sediment that is pressed together is sedimentary rock. erosion
Igneous rock is formed from ______ or lava. magma
Gneiss rocks are metamorphic and are formed from _____. granite
Igneous rock that is formed from lava cooling _____ the Earth is extrusive igneous rock. outside
An example of an extrusive igneous rock is _____. obsidian
Igneous rock that is formed from magma cooling _____ the Earth is extrusive igneous rock. inside
A sedimentary rock that is formed by gravel and small pebbles is _____. conglomerate