Classifying Rocks
Types of Rocks
Rocks
More rocks
The Rock Cycle
100
Geologists classify rocks into 3 major groups
What is igneous, sedimentary, and metamorphic
100
This type of rock is formed from lava ON the earth's surface.
What is extrusive igneous rock
100
These are the building blocks of rocks
Minerals
100
This is how metamorphic rocks are created.
What is extreme heat and pressure
100
Magma cools and crystallizes in the cycle forming _______ rock
What is intrusive igneous rock
200
The type of rock that forms from magma and lava cooling. Name both
What is intrusive and extrusive igneous rock
200
Daily Double!
Flat layers that form in metamorphic rocks as rocks are squeezed by pressure
foliation
200
This type of rock was formed because it was touching magma. The rock did not melt but it still was changed.
Metamorphic rock
200
These types of rocks can become metamorphic rocks
What is igneous, sedimentary and other metamorphic rocks
200
Igneous rock transforms to sediment by processes called ___________ & ____________
What is weathering and erosion
300
This is the term for a solid that has been released from a solution of evaporating water or liquid
Precipitate or Evaporite
300
A rock you found has some fossils within it. This type of rock is what?
What is sedimentary
300
Daily Double!
Formed by the accumulation of dead plant matter or animal remains being cemented together.
What is Coal
300
A rock has very large crystals. What kind of rock is it? Be specific!
Intrusive Igneous Rock
300
The process where layers of sediment become pressed together over time
What is compaction
400
If rocks cool slowly describe the size of the crystal it will produce
What is large?
400
This type of felsic igneous rock is black with a glassy texture. 
What is obsidian
400
Changes in enormous quantities of rock over a wide area caused by extreme pressure and heat from overlying rock or from compression caused by geologic processes
Regional metamorphism
400
The formation of these rocks is driven largely by the Sun.
Sedimentary rocks
400
Daily Double!
Changes in a rock that is in contact with magma due to the magma's extreme heat
Contact Metamorphism
500
Igneous rock cools very quickly. When it forms the appearance could be described as _________.
What is smooth or shiny or no visible crystals. Also could be vesicular or glassy
500
Some extrusive igneous rocks can float in water because they have many air bubbles. The bubbles are called....
What is vesicular?
500
The three groups of rocks are classified by ....
how they were formed
500
Sedimentary rocks that include organic material are call this
Bioclastic sedimentary rocks
500
The processes by which sediments become sedimentary rocks
Deposition, compaction or cementation