PLSS 0201 Test Practice Questions Fall 2023
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Jackson State University *
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Subject
Geology
Date
Apr 3, 2024
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Introduction to Geology PLSS 201 Practice Questions Provide the correct answer: 1. Apatite is an example of what type of mineral? (
Phosphate
) C2:S54 & 56 2. Obsidian is an example of a ___________ texture (
Glassy
) C3:S27 3. Stock can be described as tabular? (
False
) C3:S60, 62, & 63 4. Which is an intrusive igneous rocks with the lower quartz content. Basalt or Gabbro (
Gabbro
) C3:S33 5. Diverging plates boundaries on the earth coincide with what? (
Mid-ocean ridges
) C1:s31 6. An example of a sheet silicates include (
micas, clays: biotite, muscovite
,) C2:S42 7. What is the secondary equivalent of quartz (a primary mineral) is (
Chert
) C2:S52 8. Gypsum is not a silicate? Why? (
true, it contains sulfate
) C2:S56 9. Amphiboles have what type of silicate mineral structure? (
chain
) C2:S41 10. The lithosphere made of what parts? (
crust and the upper mantle
) C1:S22-23 11. The motion of lithospheric plates on earth
’s surface is caused by the __________
(
Convection of heat
) C1:S33 12. Cleavage refers to what property of minerals? (
The ability of to break along preferred direction
) C2:S64 13. The Mohs scale measures what? (
the mineral hardiness
) C2:S60-61 14. An example of a sulfate mineral is ____________. (
Gypsum
) C2:S56 15. Mafic Rocks are rich in what elements? (
Fe & Mg
) C3:S33 16. The San Andreas fault is an example of what type of boundary? (
transform boundary
) C1:S45 17. Opal is a primary silicate
made up of oxygen and silicon._( False ) C2:S52 18. An intermediate, coarse grained
volcanic rock with silica content between 50% and 65 % is best called. ( Diorite ) C3:S32 19. Hematite is a secondary non-silicate mineral rich in which element (
Fe
) C2:S54 20. Muscovite mica is a ferromagnesium mineral? (
False
) C2:S48
2 21. The largest zone of the Earth’s interior by volume is (
mantle
) C1:S19 22. A typical rate of plate motion is__________ (1-10 cm/yr) C1:S38 23. The continuous branch of Bowen’s reaction series contains which mineral? (
Plagioclase
) C3:S48 24. By definition stocks differ from batholiths in (
size
) C3:S62 25. The central atom of the tetrahedral sheet is ___________ a. aluminum b. silicon c. magnesium d. iron 26. What type of texture is found when magma cools slowly within warm rock underground? (
Phaneritic
) C3:S24 27. A student notes that a rock contains mica and plagioclase feldspar and concludes that the rock is an intermediate rock. What piece of further information could best determine if the student’s conclusion was the correct one? (
The silicate content
of the rock
) C3:S31-36 28. An common example of a carbonate mineral containing calcium and magnesium is? (
Dolomite
) C2:S55 29. Moving crustal plates and earthquakes are powered by what? (
Heat flowing through the earth’s interior
) C1:S47 30. Which of the following extrusive igneous rocks
have the higher quartz content? granite or rhyolite (
rhyolite
) C3:S31 31. Diorite and Andesite are different in ( Texture ) C3:S32 32. Subduction zones occur at what boundary? (
convergent boundaries
) C1:S41 a. divergent boundaries b. convergent boundaries 33. A surface separating country and intrusive rock is called a (
Contact
) C3:S56
3 Answer Key: 1.
(Phosphate) C2:S54 & 56 2.
(Glassy) C3:S27
3.
(False) C3:S60, 62, & 63
4.
(Gabbro) C3:S33
5.
(Mid-ocean ridges) C1:s31 6.
(micas, clays: biotite, muscovite) C2:S42 7.
(Chert) C2:S52 8.
(true, it contains sulfate) C2:S56 9.
(chain) C2:S41 10.
(crust and the upper mantle) C1:S22-23 11.
(Convection of heat) C1:S33 12.
(The ability of to break along preferred direction) C2:S64 13.
(the mineral hardiness) C2:S60-61 14.
(Gypsum) C2:S56 15.
(Fe & Mg) C3:S33
16.
(transform boundary) C1:S45 17.
( False ) C2:S52 18.
( Diorite ) C3:S32
19.
(Fe) C2:S54
20.
(False) C2:S48
21.
(mantle) C1:S19 22.
(1-10 cm/yr) C1:S38
23.
(Plagioclase) C3:S48
24.
(size) C3:S62
25.
b. silicon
26.
(Phaneritic) C3:S24 27.
(The silicate content
of the rock) C3:S31-36 28.
(Dolomite) C2:S55 29.
(
Heat flowing through the earth’s interior
) C1:S47 30.
(rhyolite) C3:S31 31.
( Texture ) C3:S32 32.
(convergent boundaries) C1:S41 33.
(Contact) C3:S56
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