Sign in to save your progress, vote, and build your own decks.Sign in
6th Grade Rocks Quiz
Rocks
38 cards·by Ingersoll's Insights
What is a rock?
A natural solid mixture of grains and minerals
What are grains?
Fragments that make up a rock.
How are rocks classified?
composition and texture
What is the definition of the rock cycle?
a series of processes that change a rock into one type into the other.
How many rock cycle path ways
3
What is an Igneous rock?
a rock formed in a variety of hot enviroments
what is magma?
molten or liquid found underground.
What is lava?
molten rock that erupts onto earths surface
what are the 2 categories of igneous rock?
intrusive and extrusive
what causes holes to form in extrusive Igneous rocks?
squished rocks that release liquid and gases
how would you describe the appearance of volcanic glass?
a glossy black piece of glass made from quickly cooling lava.
where is volcanic glass formed?
on or near volcanoes.
What are examples of volcanic glass?
obsidian and pumice
How do minerals crystallize magma?
slowly cool underground
What is the cooling rate and crystal size of Intrusive Igneous rocks?
they slowly cool and the crystal size is large
Where are Intrusive Igneous rocks formed?
underground
Give a specific example of Igneous rock
Granite
What is the definition of sedimentary rock?
deposited rocks that are joined together
What is the definition of sediment?
rocks,minerals and grains that are weathered
What are the three categories of sedimentary rocks?
Chemical,Biochemical and clastic
How are clastic sedimentary rocks made?
pressured pieces of sediment that press together and make a rock
How are chemical sedimentary rocks made?
the minerals directly crystallize from water
How are biochemical sedimentary rocks made?
they are rocks that are made of organisms or contain them
What happens during the compaction stage?
the rocks squish and leak liquid
which layer is the oldest in a layers of sediment diagram?
bottom
which layer is the youngest in a layers of sediment diagram?
the top layers
What process causes sediment to form?
Erosion
Give a specific example of a sedimentary rock?
sandstone
What is the definition of a metamorphic rock?
Rocks that change from plate pressure
What are the 2 categories of metamorphic rocks?
foilated and non foilated
What is the appearance of foilated metamorphic rocks?
parallel layers
What is the appearance of foilated metamorphic rocks?
parallel layers
question
answer
What is the texture of non foilated metamorphic rocks?
random
What forces cause the formation of metamorphic rocks?
plates push together and they change
Does pressure increase or decrease with the depth of earth's interior
increase
Were do metamorphic rocks form?
between plates
Give a specific example of a metamorphic rock.
Limestone