Types of Rocks
In order for a rock to be classified as an igneous rock it must go through_____________.
It must change from a liquid to a physical state.
This This type of rock is formed by cementation and compaction.
What is a sedimentary rock?
You can find something very old in sedimentary rock.
What are fossils?
What type of rock do they make kitchen counters out of ?
What is marble or granite?
We classify rocks by texture and _________.
What is composition?
Sedimentary rock can change into igneous as long as the sediments are________________.
What is melted?
This type of rock is formed by heat and pressure.
What is a metamorphic rock?
The crystals in igneous rocks are formed by the ____ and ________ process.
What is heating and cooling?
What type of igneous rock can we exfoliate our feet with?
What is pumice?
Sedimentary rock can be changed into metamorphic rock if it is -
What is heat and pressure underground?
Igneous and sedimentary rocks can become metamorphic if _______________ is applied.
What is pressure?
This type of rock is formed by cooling magma.
What is an igneous rock?
Metamorphic rocks are different from igneous and sedimentary rocks in that they form from_____________________.
What is an existing rock that has been changed?
What type of rock is used to make chalkboards?
What is slate?
Rocks formed when super-heated magma or lava cools and hardens
What are igneous rocks?
Geologists might recognize a metamorphic rock by distorted, wavy layers because they were caused by -
What is heat and pressure?
What processes form sediment?
What is weathering and erosion?
Igneous rock can be changed to sedimentary rock when igneous rocks are ____________ and fragments are deposited.
What is weathered?
What type of rock is used to make chalk?
What is limestone?
Rocks formed by the processes of deposition, compaction, and cementation
What are sedimentary rock?
Sedimentary rocks often contain horizontal layers because they are formed by the -
What is the deposition of sediment?
Sedimentary rock is formed by deposition and _____ of sediments.
What is layering?
Both igneous rocks and metamorphic rock require a similar process.
What is heat?
What type of rock is used to make building materials?
What is sandstone?
Why is it helpful for scientists to classify rocks?
It helps them study them better.