Classifying Rocks
Igneous Rocks
Sedimentary Rocks
Metamorphic Rocks
The Rock Cycle
100
Geologists classify rocks into 3 major groups
What is igneous, sedimentary, and metamorphic
100
Igneous rock that formed from magma and cooled very slowly UNDERNEATH the earth's surface is called ________.
What is intrusive rock
100
These small pieces or particles make up sedimentary rock. They can be other rocks or plant and animal organisms
What is sediments
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 igneous rock
200
The type of rock that forms from magma or lava cooling
What is igneous rock
200
This type of rock is formed from lava ON the earth's surface.
What is extrusive rock
200
This type of rock can be found on the streets during the winter in climates where it snows.
What is rock salt
200
These types of rocks can become metamorphic rocks
What is igneous, sedimentary and other metamorphic rocks
200
Igneous rock transform to sediment by processes called ___________ & ____________
What is weathering and erosion
300
The small units that make up a rock and its texture are called __________.
What is grains
300
Daily Double - An extrusive rock with dark color, fine grains and low silica
Daily Double - What is basalt.
300
This stone is what the Whitehouse is made out of.
What is sandstone
300
This is a thin rock that was used instead of paper.
What is slate?
300
The layers of sediment become pressed together over time
What is compaction
400
Geologists study the ________ & ________ of a rock in order to identify it.
What is texture and composition
400
This type of igneous rock is black with a glassy texture. 
What is obsidan
400
Formed by the accumulation of dead plant matter or animal remains being cemented together.
Biogenic Sedimentary Rocks
400
The texture of a metamorphic rock arranged in parallel layers is called
What is foliated
400
An asteroid crashing on the earth's surface can form this type of metamorphism __________ while ______metamorphism can form from the two mountains slowly crashing together
What is contact and regional metamorphism?
500
Igneous rock cools very quickly.When it forms the rock could be described as _________.
What is smooth or shiny or no visible crystals
500
This igneous rock can float in water, and some people use it to clean their feet
What is pumice
500
This type of texture is found on a sedimentary rock made up of broken pieces of rock and minerals.
What is detrital texture?
500
The three ways metamorphism changes a rock are
What are:
–Change in grain size
–Change in grain orientation
–Change in mineralogy
500
Daily Double - The processes by which sediments become sedimentary rocks - three words
Deposition, compaction or cementation