Classifying Rocks
How are igneous rocks classified.
Texture and origin
How is igneous rock formed?
By cooling magma and lava
How are metamorphic rocks formed?
What is heat and pressure.
From compaction and cementation of sediments.
Erosion is a part of the rock cycle. True or False
True
What are the 20 minerals that make up most of earth's crust called?
Rock forming minerals
Extrusive rock which forms above the Earth's surface has what size crystals.
What is small crystals
Where are metamorphic rocks formed?
Deep beneath Earth's surface
What is sediment?
Small solid pieces of rocks and organic matter.
True or False: Once a rock is changed it can't be changed back.
False
How are metamorphic rocks classified?
Foliated or Non-foliated.
The most common intrusive igneous rock.
What is granite
What does foliated mean?
Layers arranged in parallel bands.
What are the 4 steps of sedimentary rock formation.
Erosion,deposition,compaction, and cementation.
What is the rock cycle.
Possible answer: The rock cycle is a cycle of many pathways in which rocks change form over millions of years.
What characteristics are used to classify rocks?
Mineral content, color, and texture
The most common extrusive igneous rock.
What is basalt
Is Sandstone a metamorphic rock?
No, it is an sedimentary rock.
What are the 3 main types of sedimentary rock?
CLastic, Chemical, and Organic.
How would metamorphic rock form from sedimentary rock.
Heat and Pressure
How are sedimentary rocks classified?
Clastic,Chemical, and Organic.
Two ways to describe an igneous rock.
What is Intrusive and Extrusive rock.
What types of rocks can become a metamorphic rock?
Igneous,metamorphic, and Sedimentary.
What type of sedimentary rock is rock salt.
Chemical sedimentary rock
True or False: The rock cycle continues forever.
True