Igneous rocks
This is the molten rock found inside the earth before it erupts.
What is magma?
These are the remains or impressions of prehistoric organisms often found in sedimentary rock.
What are fossils?
These are the two steps needed to turn any rock into a metamorphic rock. (think the song Mrs. Geske plays)
What are heat and pressure?
This is the name of the continuous process where rocks change from one type to another over millions of years.
What is rock cycle?
This is the softest mineral on the Mohs scale, often found in metamorphic rocks.
What is talc?
This type of igneous rock forms on the Earth's surface and usually has very small crystals because it cools quickly.
What is extrusive rock?
This is the process where water, wind, and ice break rocks down into smaller pieces called sediment.
What is weathering?
This term describes the layered or banded look found in some metamorphic rocks like Gneiss.
What is foliation?
To become magma, a rock must undergo this process.
What is melting?
This is the "parent rock" of Quartzite. (this rock started out as this rock)
What is sandstone?
This is the name for igneous rocks that form inside the Earth from slow-cooling magma, often resulting in large, visible crystals.
What is intrusive?
Sedimentary rocks are almost always found in these, which look like stripes in a canyon wall.
What are layers?
This metamorphic rock is often used for chalkboards or roofing tiles because it splits into flat sheets.
What is slate?
When sediments are dropped off in a new location by wind or water, it is called this.
What is deposition?
This light, hole-filled igneous rock is the only rock that can float on water. (it is an extrusive igneous rock)
What is pumice?
If an igneous rock cools very slowly deep underground, its crystals will be this size.
What is large?
This is the "glueing" together of sediments by minerals to form a solid rock.
What is cementation?
Metamorphic rocks are formed deep underground but they do NOT do this (if they did, they would become igneous).
What is melt?
Any rock can become a sedimentary rock if it is weathered, eroded, and then undergoes these two "C" words.
What are compaction and cementation?
This high-grade metamorphic rock is known for its "gneissic banding," which looks like dark and light colored stripes or waves. (also know as the nice rock)
What is gneiss?
This glassy, black igneous rock was often used by ancient people to make arrowheads.
What is obsidian?
This specific sedimentary rock is made of rounded pebbles and stones cemented together.
What is conglomerate?
Before it became the metamorphic rock Marble, it started out as this sedimentary rock.
What is limestone?
True or False: The rock cycle has a specific beginning and a specific end.
What is false?
While most rocks are made of minerals, this common black sedimentary rock is actually made of the decomposed remains of ancient plants.
What is coal?