How Geologists Classify Rocks
Igneous Rocks
Sedimentary Rocks
Metamorphic Rocks
Rock Cycle
100
Collect and study Samples
What do geologists do to classify rocks?
100
molten rock beneath Earth's surface
What is magma?
100
small, solid pieces of material that come from rocks or living things
What is sediment?
100
rocks that change form
What are metamorphic rocks?
100
the process of rocks changing
What is the rock cycle?
200
Size, shape, patter of rock's grains
What is texture?
200
where they formed - under or above the Earth's surface
What is used to classify igneous rock?
200
water, wind, ice
What carries sediment?
200
heat and pressure
What are the two forces that form metamorphic rock?
200
erosion
What is process by which igneous (or metamorphic) rocks change to sedimentary rocks?
300
Igneous, Sedimentary, Metamorphis
What are the three major groups of rocks?
300
extrusive
What is igneous rock that is formed outside the Earth's surface?
300
compaction
What is the sedimentary rock formation process that involves heavy layers pressing down on top of each other?
300
arrangement of grains
What is used by geologists to classify metamorphis rock?
300
heat and pressure
What is the process by which sedimentary (or igneous) rocks turn into metamorphic rocks?
400
color, texture, mineral composition
What are the 3 traits geologists use to classify rocks?
400
formed from oxygen and silicon
What is silica?
400
clastic, organic, chemical
What are the three types of rocks?
400
foliated
What is the classification that has grains arranged in parallel layers?
400
melt
What is the process by which metamorphic rocks turn into molten material?
500
The Lord is my rock, my fortress and my delivere, my God is my rock, in whom I take refuge.
What is Psalm 18:2
500
An example is granite - it is light colored
What is an example of an igneous rock that has high silica composition?
500
erosion
What is the destructive force that breaks and wears rock away?
500
appearance, texture, crystal structure, mineral content
What changes within metamorphic rock?
500
volcanic activity
What is process by which igneous rock turns into molten material?
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