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21 Cards in this Set

  • Front
  • Back
_____is a mixture of crystals of one or more minerals.
rock
____(S) are the remainsof once living things.
fossils
the three main types of rocks are____,____,____.
igneous, sedimentary, and metamorphic.
when magma flows out onto the Earth's surface, it is called_____.
lava
________is the process by which one rock type changes into anthor.
the rock cycle
______rock is a rock that forms when sediments are compacted and cemented togther.
sedimentary
______rock is rock that forms when the texture and composition of a peexisting rockis changed by heat or pressure deep underground.
metamorphic
Two important criticistics are _______/
______ is how you can classify rocks
composition and texture
The minerals a rock is made of determine the _____of the rock
composition
The____of a rock is determined by the sizes, shapes, and positions of the grains of which it is made.
texture
Rocks that are made entirely of small grains such as slit or clay particles are_______grained.
fine
Rocks that have a texture between fine and coarse grained are _______ texture.
medium grained
Three ways magma can form are when ______,when rock is______/(or)_______, or when rock changes_______
1.heated
2.when pressure is released (or)when pressure is released
3.composition
The lightweight rocks are called______.
felsic
rocks that are rich in iron, magnesium, and calcium are called______.
mafic
when magma cools beneath the Earth's surface,the resulting rock is called____________.
intrusive coarse-grained
_____are large balloon shaped intrusive formations that result when magma cools at great depths.
plutons
Igneous rock that forms on the Earth's surface is called _______.
extrusive
When lava erupts from a valcano a formation call a _______ is made.
lava flow
Sometimes lava erupts from long cracks in the Earth's surface is called ________.
fissures
When a large amount of lava flows out of fissure it can cover a vast area forming a plain called a______
lava plateau