Show:
Classifying Rocks
Igneous
Sedimentary
Metamorphic
Rock Cycle
100
the three major rock groups
What are igneous, sedimentary and metamorphic?
100
magma that has a high content of this forms a light colored rock
What is silica?
100
when particles are carried away from their source by water or wind
What is erosion?
100
the arrangement of these is how geologists classify metamorphic rocks
What are grains?
100
a series of processes on Earth’s surface and in the crust and mantle that slowly change rocks from one kind to another.
What is the rock cycle?
200
the types of grain pattern
What are banded and non-banded?
200
this means "fire" in latin
What is "ignis"?
200
when particles sink to the bottom of an ocean or lake as loosely packed sediment
What is deposition?
200
the type of metamorphic rock that cannot be split into layers
What is nonfoliated?
200
these cause faulting, folding, and other motions of the crust that help to form sedimentary and metamorphic rocks
What are plate movements?
300
the types of grain texture
What are grain size, grain shape and grain pattern?
300
igneous rocks are classified according to these
What are origin, texture and mineral composition?
300
when particles are squeezed together under great pressure
What is compaction?
300
heat and pressure applied to sandstone creates this rock
What is quartzite?
300
granite's metamorphic state
What is gneiss?
400
the three observations geologists make when studying a rock sample
What are the rock's mineral composition, color and texture?
400
this rock is used for mixing soil and starting vegetable seeds
What is perlite (heated obsidian)?
400
when particles are glued together as mineral solutions harden
What is cementation?
400
these are changes that occur as a metamorphic rock changes (you must name all four)
What are texture, appearance, crystal structure and mineral content?
400
Shale's metamorphic state
What is slate?
500
the four minerals that make up granite
What are quartz, feldspar, hornblende and mica?
500
Ancient Native Americans used this rock to make sharp tools for cutting and scraping
What is obsidian?
500
forms where the remains of plants and animals are deposited in thick layers
What is organic rock?
500
out of slate, quartzite, gneiss and marble, only two are nonfoliated
What are quartzite and marble?
500
quartzite in the sedimentary form
What is sandstone?