Q1) What is true about the difference between a mineral and a rock? a. A mineral

ID: 235223 • Letter: Q

Question

Q1) What is true about the difference between a mineral and a rock?

a. A mineral is required to be naturally occurring, but a rock is not.

b. A rock is required to be naturally occurring, but a mineral is not.

c. A rock is generally made up of an aggregate of minerals, but this is not a requirement. Rocks can also be made up of non-mineral matter.

Q2) A rock that crystallizes at depth from magma deep underground is referred to as:

a. Aphanitic

b. Lava

c. Volatiles

d. Intrusive

e. Extrusive

Q3)If quartz is present in an igneous rock, what composition must it be?

a. Ultramafic

b. Mafic

c. Intermediate

d. Felsic

Q4) What composition of magma is basalt made from primarily?

a. Ultramafic

b. Mafic

c. Intermediate

d. Felsic

1 c

a mineral is a naturally occuring inorganic solid substance with a definate chemical composition. a rock is an aggregate of minerals.

a rock can also be madeup of non mineral matter like obsidian(glass) coal etc

2 intrusive rock

those rocks which are crystallized from magma beneath the earth surface are called intrusive rocks

3 felsic

rocks containing more than 66% sio2 are termed as felsic rocks

4 mafic

rocks contaning containing 45 to 55% of silica content

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