Rock Cycle
Igneous Rocks
Sedimentary Rocks
Metamorphic Rocks
Rock Identification
100
How do igneous rocks form?
melting and cooling
100
What are 2 differences between magma and lava?
magma-inside earth, lava-on surface magma has more trapped gases
100
What are the two types of weathering?
chemical and physical
100
What is contact metamorphism?
where the heat from hot magma causes surrounding rock to heat up and recrystallize into metamorphic rock
100
Which extrusive igneous rock is light in color and has very small crystals?
rhyolite
200
How do metamorphic rocks form?
heat and pressure
200
Name 4 major elements present in magma/the Earth's crust.
O, Si, Al, Fe, Mg, Ca, K, Na
200
What are clastic sedimentary rocks?
rocks formed from loose sediments
200
What does foliated mean?
a rock is banded or striped in thin layers
200
Name a type of organic sedimentary rock.
limestone, coal
300
How do sedimentary rocks form?
WEDCC
300
What type of igneous rock (composition category) would be low in silica and dark colored?
basaltic
300
What is lithification? What two processes are part of lithification?
turning sediments into sedimentary rock-compaction and cementation
300
What type of metamorphism involves really hot water and often occurs near igneous intrusions?
hydrothermal metamorphism
300
Which sedimentary rock is course grained and has small rounded pebbles or grains?
conglomerate
400
What would have to happen for a sedimentary rock to change into an igneous rock?
melting and cooling
400
How does the amount of water affect melting point of rocks?
more water lowers melting points
400
What are two characteristics of sedimentary rocks that are not present in other types of rocks?
bedding, ripple marks, fossils, sorting/rounding
400
What common metamorphic rock is shale often turned into with low grade metamorphism?
slate
400
Which metamorphic rock is very course, comes in many colors, and is also used in construction?
marble
500
What would have to happen for a metamorphic rock to change into a sedimentary rock?
WEDCC
500
What is the term for texture of an igneous rock that has large and small crystals?
porphyritic
500
How are chemical sedimentary rocks formed?
evaporation of liquid which leaves behind mineral sediments
500
Give an example of a common porphyoblast rock.
schist
500
Name a metamorphic rock that is foliated.
gneiss
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