Unit Test — Unit test Answers
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An igneous rock floats because air bubbles became trapped when molten material erupted from an underground volcano. How else can this rock be accurately described?
A
intrusiveB
extrusiveC
large crystalsD
coarse texture22
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These minerals were formed through crystallization of molten materials.
A
The mineral on the left formed from lava.B
The mineral on the right formed from magma.C
The mineral on the left has smaller crystals than the mineral on the right.D
The mineral on the left cooled more slowly than the mineral on the right.23
Sandstone is a sedimentary rock. Which two processes cause sand particles to form sandstone?
A
cementation and coolingB
compaction and cementationC
cooling and erosionD
erosion and heating24
The image shows an example of a sedimentary rock.
A
visible crystal formationsB
variation of colored sedimentsC
visible rock fragmentsD
distribution of organic materials25
Which phrase describes foliated rocks?
A
tend to break in halfB
grains arranged randomlyC
tend to split apart along bandsD
grains arranged in increasing sizeDid you find these answers helpful?
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