Which type of rock could be formed by chemical precipitation from the ocean, dep
ID: 891 • Letter: W
Question
Which type of rock could be formed by chemical precipitation from the ocean, deposition from moving air, water, or ice, or accumulations of the shells or skeletons of organisms?
metamorphic
sedimentary
No single type of rock could be formed by all of these different types of processes
igneous
Accumulated biological materials such as shells and skeletons cannot be classified as rocks.
Which of the following statements is true of mechanical weathering?
it is most rapid in warm, humid areas such as a tropical rain forest
it produces new minerals
it leads to the formation of finer particles with larger surface area
it is less important than chemical weathering in desert areas
it includes hydration and oxidation
Which of the following scenarios would be most likely to result in angular clasts?
stream transport over a long distance
working by waves at a beach
slow settling in the deep ocean
rockfall from steep slopes of a mountain
wind transport and accumulation of dunes
Which of the following is a condition favoring deposition of sediment carried by a stream?
a decrease in the gradient of the channel
a decrease in grain size as clasts breaks down
an increase in the turbulence of the water
an increase in water velocity
a decrease in dissolved ions content in the water
Which of the following is NOT involved in turning sediment into sedimentary rock?
cementation
metamorphism
all of these processes are involved
compaction
burial
Which of the following is NOT a common process affecting shorelines?
movement of sediment by action of the waves and tides
addition of sediment from rivers
passive margin earthquakes at the boundary between continental and oceanic crust
lateral transport of sediment by longshore current
addition of sediment carried by wind
Which of the following characteristics could a geologist use to understand the environment in which a sedimentary rock was deposited?
fossils
all of these
only a and b
sedimentary structures
color
Braided river channels are characterized by which of the following:
a more stable floodplain relative to a meandering stream
low sediment load relative to a meandering stream
more channels and islands than a meandering stream
high discharge relative to a meandering stream
A stream cannot erode below:
its headwaters
sea level
its tributaries
its channel
its bedrock
metamorphic
sedimentary
No single type of rock could be formed by all of these different types of processes
igneous
Accumulated biological materials such as shells and skeletons cannot be classified as rocks.
Explanation / Answer
1-sedimentary
2-it leads to the formation of finer particles with larger surface area
3-rockfall from steep slopes of a mountain
4-a decrease in the gradient of the channel
5-metamorphism
6-passive margin earthquakes at the boundary between continental and oceanic crust
7-sedimentary structures
8-high discharge relative to a meandering stream
9-
its bedrock
its bedrock
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