Quiz 6. Weathering and Sediments and Sedimentary Rocks
1. What is the name of the general process by which rocks are broken down at the Earth's
surface?
a) Deposition b) Erosion
c) Lithification
d) Weathering
2. In which of the following climates will chemical weathering be the most rapid?
a) cold and dry
b) cold and humid
c) hot and dry
d) hot and humid
3. Which of the following minerals is least stable at the Earth's surface?
a) hematite
b) olivine
c) pyroxene d) quartz
4. All of these factors control weathering EXCEPT for:
a) Composition
b) Climate
c) Soil and vegetation
d) Natural radioactivity
e) Time
5. Which of the following rock and sediment types will weather slowest in a moderately
rainy climate?
a) granite
b) halite
c) limestone d) clay
6. Which of the following conditions promotes chemical weathering?
a) high altitude
b) low temperature
c) sparse vegetation
d) thick soil
7. Which of the following statements is false?
a) Soil protects the underlying bedrock from further chemical weathering.
b) Soil is an important natural resource.
c) Soil may contain fragments of bedrock, clay minerals, and organic matter.
d) Soil is a direct product of weathering.
8) As a rock breaks into smaller pieces, the ratio of surface area to volume __________.
a) decreases b) increases c) remain the same
d) can either increase or decrease depending on the size of the pieces
9) Acids enhance chemical weathering. What is the most common natural acid on the
Earth's surface?
a) carbonic acid
b) hydrochloric acid c) nitric acid d) sulfuric acid
10) Which of the following is a form of chemical weathering?
a) dissolution
b) exfoliation
c) frost wedging
d) all of the above
11) Diagenesis includes all the following processes Except for:
a) compaction b) dewatering c) weathering d)cementation
12)Symmetrical dunes are typical of environments
a) with high energy and lost of wave activity
b) with one current direction
c) with two opposed current directions
13)Steep crossbeds are generally deposited in
a)deep marine environments
b) beaches
c) deserts
d) swamps
e) b and c