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Rocks Test

12/19/18 test :)

QuestionAnswer
Rock Cycle Ways in which rocks form from one form to another
Partial Melting When a portion of a solid is melted
Felsic Igneous Rocks rich in feldspar (Lighter)
Mafic Igneous Rocks high in magnesium and iron, (Darker)
Intrusions are formed.. Inside the earth
Extrusions are formed.. Outside the earth, an example is a volcano.
Compaction The creation of sedimentary rocks by the weight of the sediments above them.
Cementation The process when minerals go into pores
Sorting Describes the distribution of grain size of sediments ( Big rocks on the bottom small on top )
Paleontology is the study of... Fossils
The principle of the past can explain what happens and why Uniformitarianism
This type of rock is formed when sediments are pressed and glued together Sedimentary
For well defined grains in an Igneous rock it has to be Cooled slowly
Characteristics of a porphyritic rock Holes and cooled in the water rapidly
What is the only use for carbon? Once living things
How are Metamorphic rocks made Heat and pressure
Rock formed from being melted and cooled Igneous
Example of Metamorphic rock Slate, marble, gneiss
Example of organic sedimentary rock Coal
Sometimes metamorphic rocks have defined mineral bands, they are called.. Foliated or Strata
Scientists claim the earth to be how old? 4.5 Billion years
Insects are preserved in sap like stuff called.. Amber
Fossilized feces Coprolite
The understanding that older rocks live below the younger rocks is called Superposition
Created by: 2023721jk
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