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Igneous Rocks Flashcards | StudBud
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Igneous Rocks
Igneous Rocks
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Igneous rock quiz for 8th grade Earth Science
Flashcards
11 cards
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Questions
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Answers
1
Which type of igneous rock is formed when magma cools slowly beneath Earth's surface?
magma rock
smooth
intrusive
extrusive
2
Name one of two items used to classify igneous rocks.
color
size
where they form
composition
3
What is an igneous rock formed when lava cools at or near Earth's surface?
metamorphic
magma
extrusive
intrusive
4
What is another name for the mineral crystals in cooling magma or lava?
grains
intrusive
basaltic
pressure
5
What are dark-colored igneous rocks that are rich in iron and magnesium called?
extrusive
basaltic
magnetite
marble
6
What is one of the two conditions needed to melt minerals into magma?
rocks
rainy
temperature
lava
7
What type of rock are those that form from magma or lava?
sedimentary
gray
igneous
metamorphic
8
What is the molten material below Earth's surface?
magma
lava
water
dirt
9
What is the molten material that flows from volcanoes?
water
lava
grains
magma
10
What is an extrusive igneous rock that is actually glass?
granite
obsidian
gold
lava
11
What are light colored igneous rocks called?
obsidian
magma
granite
basaltic
