EAPS 112 - Chapter 2 (Minerals and Rocks) Exam Questions & Answers 2023/2024
Minerals are naturally occurring, organic, crystalline solids. - ANSWER-False
The atomic number of an element is determined by the number of protons in the nucleus - ANSWER-True
Metamorphic rocks form from when ma...
The atomic number of an element is determined by the number of protons in the nucleus - ANSWER-
True
Metamorphic rocks form from when magma cools - ANSWER-False
The silica tetrahedron is the building block of all silicate minerals and continues one silicon atom and
three oxygen atoms - ANSWER-False (4 oxygen)
Igneous rocks can be plutonic, meaning the rock formed underground or extrusive, meaning the rock
formed above groun - ANSWER-True
Intrusive igneous rocks have relatively small crystals as compared to extrusive igneous rocks, which have
larger crystals - ANSWER-False (other way around)
Economic geology focuses on the search for rocks and minerals with commercial value - ANSWER-True
Elements are made of two or more types of atoms - ANSWER-False
Metamorphic and igneous rocks are most likely to form in the middle of tectonic plates - ANSWER-False
Erosion is the breaking of rocks into smaller pieces by physical or chemical means - ANSWER-False (that's
weathering)
Detrital sedimentary rocks are classified according to sediment size - ANSWER-True
, If a rock experiences a change in texture, it has undergone metamorphism - ANSWER-True
Foliation is the alignment along parallel planes of mineral in sedimentary rocks - ANSWER-False (in
metamorphic rocks)
The majority of contact metamorphism occurs during mountain building episodes, when two continental
plates collide. - ANSWER-False
Of the more than 3.800 known minerals, only 50 are commonly found in rocks - ANSWER-False
The most common mineral group on Earth are known as the ________ .
a. silicates
b. oxides
c. halides
d. carbonates
e. sulfides - ANSWER-Silicates
What are the rocks that form from the cooling of magma?
a. metamorphic
b. lava rocks
c. igneous
d. minerals
e. sedimentary - ANSWER-igneous
Volcanic rocks are different from plutonic rocks in that ________ .
a. plutonic rocks are harder
b. volcanic rocks have larger crystals
c. volcanic rocks are darker in color
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