Types of Rocks
Metamorphic rocks form from _____ and _____.
Obsidian
What is igneous?
True or false: the rock cycle is the process that creates and transforms rocks?
True.
Commonly used for knives and tools (especially by native americans!).
What is obsidian?
What type of rock makes up 75% of Earth?
What is sedimentary rock?
Igneous rocks form from ______ melted rock.
What is cooled?
Gneiss
What is metamorphic?
Process that squeezes sediment into rocks.
What is compaction?
Commonly used for countertops.
What is granite?
Ms. Alex's favorite mineral.
What is kyanite?
Sedimentary rocks form from ______.
What is sediment?
Sandstone
What is sedimentary?
Process that "glues" sediments together.
What is cementation?
Commonly used as pencil lead.
What is graphite?
True or false: Sedimentary rocks make up 99.9% of rocks in Arkansas.
True
What are igneous rocks?
Granite
What is igneous?
Process that breaks down, transports, and deposits sediment?
What is erosion/deposition?
What is the name of the scale used to determine mineral hardness?
What is Moh's Hardness Scale?
What is the study of rocks called?
What is geology?
Rocks that morph from one rock into another.
What is metamorphic?
Limestone
What is sedimentary?
Process that chemically or physically breaks down rocks.
Mineral that makes up 51% of all minerals in Earth's crust.
What is feldspar?
Is petrified wood a rock or a fossil?
Fossil?