estion 1 1. The two types of Igneous rock are: Clastic and Chemical Volcanic and
ID: 155049 • Letter: E
Question
estion 1
1.
The two types of Igneous rock are:
Clastic and Chemical
Volcanic and Plutonic
Smooth and Rough
Foliated and Non-Foliated
Plutonic and Vesicular
1 points
Question 2
1.
The mechanical weathering process most predominant in cold climates that often produce talus slopes is ________.
frost wedging
hydrolysis
thermal expansion
unloading
1 points
Question 3
1.
Which of the following, about Bowen's minerals is NOT correct?
Bowen's dark minerals rust
Feldspars weather to clay in a wet environment
Quartz is the most resistant mineral to weathering
Quartz weathers to clay in a wet environment
1 points
Question 4
1.
It does not matter in what climate a rock is located - rocks always weather at the same rate.
True
False
1 points
Question 5
1.
Physical weathering reduces sediment size increasing the surface area available for chemical attack.
True
False
1 points
Question 6
1.
What is the relationship between cooling rate and crystal size?
Slower cooling yields smaller crystals
There is no realtionship between cooling rate and crystal size
Slower cooling yields larger crystals
1 points
Question 7
1.
Sedimentary rocks ________.
may contain fossils
hold important clues to Earth's history
form at or near the earth's surface
all of these
1 points
Question 8
1.
The testing of sedimentary rocks for the presence of the mineral calcite (the predominant component of carbonate rocks) can be done by using what test?
the rock will glow in the dark
the rock will break to form smooth surfaces
hydrochloric acid will cause the calcite to fizz
the rock will tast salty
1 points
Question 9
1.
A feldspar-rich sandstone is called a(n) _______ and forms in a ________ environment.
arkose, dry
arkose, wet
quartz arenite, dry
shale, wet
shale, dry
1 points
Question 10
1.
The very last process in turing sediment into a sedimentary rock is called lithification. What are the two steps of lithification?
Cementation and deposition
Weathering and erosion
Weathering and deposition
Compaction and cementation
1 points
Question 11
1.
With time, sediment transported by a fluvial (river) system
becomes rounder only
becomes smaller only
becomes rounder and smaller
none of these is correct
1 points
Question 12
1.
Clastic / Detrital sedimentary rocks are classified (named) primarily on the basis of ________.
color
type of bedding
composition
grain or particle size
1 points
Question 13
1.
Which one of the following is NOT related to chemical weathering?
decomposition
frost wedging
hydrolysis
oxidation
1 points
Question 14
1.
Organize the following textures in order of their cooling rates from slowest to fastest.
glassy, coarse grained, fine grained
glassy, fine grained, coarse grained
coarse grained, fine grained , glassy
Fine grained, coarse grained, glassy
1 points
Question 15
1.
Ripplemarks in rocks are formed by
heating and cooling
drying and shrinking
contact with magma
moving wind or water
1 points
Question 16
1.
A glassy texture in an igneous rock is the result of what?
Cooling quickly as a lava flow
Chilling the lava super quickly
Cooling slowly in a pyroclastic eruption
2 distinct cooling rates
1 points
Question 17
1.
To which of the following groups does breccia bleong?
chemical sedimentary
clastic sedimentary
foliated metamorphic
unfoliated metamorphic
1 points
Question 18
1.
What is the most likely texture of an igneous rock if magma cooled slowly underground?
Fine grained porphyritic
Pyroclastic
Coarse grained porphyritic
Coarse grained
Porphyritic
1 points
Question 19
1.
Which mineral is most common in clastic / detrital sedimentary rocks? (hint: think about which minerals are and are not resistant to weathering.)
quartz
calcite
olivine
hornblende
1 points
Question 20
1.
What term means that an igneous rock has 2 distinct crystal sizes due to 2 cooling rates?
Garnitite
Pyroclastic
Granoblastic
Porphyritic
Clastic and Chemical
Volcanic and Plutonic
Smooth and Rough
Foliated and Non-Foliated
Plutonic and Vesicular
Explanation / Answer
1. Volcanic and Plutonic
2. frost wedging.
3. Quartz weathers to clay in a wet environment
4. False
5. True
6. Slower cooling yields large crystals
7. All of the above
8. hydrochloric acid will cause the calcite to fizz.
9. Arkose, Wet
10. Compaction and cementation
11.Becomes rounder and smaller
12. Grain or particle size.
13. Frost wedging
14. Glassy, Fine grained, coarse grained
Coarse grained, fine grained, glassy
Fine grained, Coarse grained, glassy
glassy, coarse grained, fine grained
15. Moving wind or water
16. Chilling the lava Quickly
17 Foliated metamorphic
18. Fine grained porphyritic
19. quartz
20. Porphyritic
7. All of the above
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