Question 1

This figure shows the geologic timescale.Which period listed below would be part of the Mesozoic?

Accepted Answer

A) Neogene 
B) Jurassic 
C) Pennsylvanian 
D) Mississippian 
E) Cambrian 
A) Neogene 
B) Jurassic 
C) Pennsylvanian 
D) Mississippian 
E) Cambrian

Question 2

Using the data in this table,determine the age of the dike.

Accepted Answer

A) 500 
B) 1,000 
C) 40,000,000 
D) 500,000,000 
E) 1,000,000,000 
A) 500 
B) 1,000 
C) 40,000,000 
D) 500,000,000 
E) 1,000,000,000

Question 3

If you were trying to correlate these two sequences of rocks,what would probably be the most straightforward strategy to use?

Accepted Answer

A) determine numeric ages on pieces of rock in the landslide on top 
B) compare the fossils of the middle layers 
C) compare the thicknesses of the middle layer 
D) compare the thicknesses of the lower layer 
A) determine numeric ages on pieces of rock in the landslide on top 
B) compare the fossils of the middle layers 
C) compare the thicknesses of the middle layer 
D) compare the thicknesses of the lower layer

Question 4

What is the youngest event represented in this block diagram?

Accepted Answer

A) formation of the lowest layer 
B) deposition of the top layer 
C) erosion of a canyon by a river 
D) retreat of the seas 
A) formation of the lowest layer 
B) deposition of the top layer 
C) erosion of a canyon by a river 
D) retreat of the seas

Question 5

What kind of geologic feature is shown in this photograph?

Accepted Answer

A) contact metamorphism 
B) unconformity 
C) desert varnish 
D) desert pavement 
E) none of these 
A) contact metamorphism 
B) unconformity 
C) desert varnish 
D) desert pavement 
E) none of these

Question 6

What type of feature is shown in this photograph of Siccar Point,Scotland?

Accepted Answer

A) monocline 
B) thrust fault 
C) normal fault 
D) unconformity 
A) monocline 
B) thrust fault 
C) normal fault 
D) unconformity

Question 7

Which of following geologic events is the youngest?

Accepted Answer

A) deposition of the shale (3) 
B) deposition of the lower units (4) 
C) formation of the fold (5) 
D) accumulation of the oil and gas 
A) deposition of the shale (3) 
B) deposition of the lower units (4) 
C) formation of the fold (5) 
D) accumulation of the oil and gas

Question 8

This figure shows two sections that partially overlap in age.Dashed lines show how the two sections correlate.What can you conclude from these correlations?

Accepted Answer

A) the oldest unit is unit 4 
B) the youngest unit is unit 6 
C) the rate at which unit 5 was deposited was constant across the area 
D) the left section represents older rocks than the right section 
E) none of these 
A) the oldest unit is unit 4 
B) the youngest unit is unit 6 
C) the rate at which unit 5 was deposited was constant across the area 
D) the left section represents older rocks than the right section 
E) none of these

Question 9

Using the data in this table,calculate the number of half-lives that have passed for the dike (unit D on this table).

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 10

This figure shows two fault scarps,a lava flow,and erosion along one of the scarps.What is probably the oldest feature of those listed below?

Accepted Answer

A) the scarp on the left 
B) the scarp on the right 
C) the lava flow 
D) erosion of the scarp on the right 
A) the scarp on the left 
B) the scarp on the right 
C) the lava flow 
D) erosion of the scarp on the right

Question 11

Which numbered layer in this photograph represents the youngest layer?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 12

The geologic relationships in this figure indicate that the lava flow:

Accepted Answer

A) pushed the trees over 
B) overlies an angular unconformity 
C) is younger than the landscape surface partially covered by the lava flow 
D) that materials beneath the lava flow were uplifted from great depth 
A) pushed the trees over 
B) overlies an angular unconformity 
C) is younger than the landscape surface partially covered by the lava flow 
D) that materials beneath the lava flow were uplifted from great depth

Question 13

The highest surface on this figure is a river terrace.This terrace:

Accepted Answer

A) is older than the modern river channel 
B) formed sometime in the past 
C) predates erosion down to the present level 
D) all of these 
A) is older than the modern river channel 
B) formed sometime in the past 
C) predates erosion down to the present level 
D) all of these

Question 14

From this cross section of the Grand Canyon,what is the boundary between the various Precambrian rocks and the Paleozoic sedimentary units?

Accepted Answer

A) it is a depositional contact,probably representing only a short period of geologic time 
B) it is an angular unconformity in most places and a nonconformity where it overlies granite 
C) it generally is an unconformity and represents more time in the right part of the diagram than in the left part of the diagram 
D) all of these 
A) it is a depositional contact,probably representing only a short period of geologic time 
B) it is an angular unconformity in most places and a nonconformity where it overlies granite 
C) it generally is an unconformity and represents more time in the right part of the diagram than in the left part of the diagram 
D) all of these

Question 15

Which of the numbered features is the oldest?

Accepted Answer

A) conglomerate (1) 
B) unconformity (2) 
C) shale layer (3) 
D) lower sedimentary units (4) 
E) formation of the fold (5) 
A) conglomerate (1) 
B) unconformity (2) 
C) shale layer (3) 
D) lower sedimentary units (4) 
E) formation of the fold (5)

Question 16

This figure shows two sections of rocks.What is the youngest unit?

Accepted Answer

A) unit 1 
B) unit 4 
C) unit 6 
D) unit 9 
E) none of these 
A) unit 1 
B) unit 4 
C) unit 6 
D) unit 9 
E) none of these

Question 17

Which of the following is a reason why rock units may change from one section to another?

Accepted Answer

A) facies change 
B) restricted aerial distribution 
C) removed along an unconformity or disconformity 
D) eroded away 
E) all of these 
A) facies change 
B) restricted aerial distribution 
C) removed along an unconformity or disconformity 
D) eroded away 
E) all of these

Question 18

Which of the following is the earliest (oldest)chapter of geologic time?

Accepted Answer

A) Cenozoic 
B) Mesozoic 
C) Paleozoic 
D) Precambrian 
A) Cenozoic 
B) Mesozoic 
C) Paleozoic 
D) Precambrian

Question 19

How would we use isotopic ages to infer the ages of the upper and lower unit in this diagram?

Accepted Answer

A) The lower unit would be younger than an age on the crosscutting dike. 
B) The upper unit would be older than an age determined on pebbles of the dike in that unit. 
C) The dike is younger than the lower unit but older than the upper unit. 
D) An age on the dike would not help us because it is an igneous rock. 
A) The lower unit would be younger than an age on the crosscutting dike. 
B) The upper unit would be older than an age determined on pebbles of the dike in that unit. 
C) The dike is younger than the lower unit but older than the upper unit. 
D) An age on the dike would not help us because it is an igneous rock.

Question 20

What strategies do we use to investigate human origins?

Accepted Answer

A) the same relative-dating principles we apply to older rocks 
B) finding pieces of an older wall in younger deposits 
C) determining carbon-14 ages on bones,wood,and charcoal 
D) dating interbedded volcanic rocks 
E) all of these 
A) the same relative-dating principles we apply to older rocks 
B) finding pieces of an older wall in younger deposits 
C) determining carbon-14 ages on bones,wood,and charcoal 
D) dating interbedded volcanic rocks 
E) all of these

This figure shows the geologic timescale.Which period listed below would be part of the Mesozoic?

Using the data in this table,determine the age of the dike.

If you were trying to correlate these two sequences of rocks,what would probably be the most straightforward strategy to use?

What is the youngest event represented in this block diagram?

What kind of geologic feature is shown in this photograph?

What type of feature is shown in this photograph of Siccar Point,Scotland?

Which of following geologic events is the youngest?

This figure shows two sections that partially overlap in age.Dashed lines show how the two sections correlate.What can you conclude from these correlations?

Using the data in this table,calculate the number of half-lives that have passed for the dike (unit D on this table).

This figure shows two fault scarps,a lava flow,and erosion along one of the scarps.What is probably the oldest feature of those listed below?

Which numbered layer in this photograph represents the youngest layer?

The geologic relationships in this figure indicate that the lava flow:

The highest surface on this figure is a river terrace.This terrace:

From this cross section of the Grand Canyon,what is the boundary between the various Precambrian rocks and the Paleozoic sedimentary units?

Which of the numbered features is the oldest?

This figure shows two sections of rocks.What is the youngest unit?

Which of the following is a reason why rock units may change from one section to another?

Which of the following is the earliest (oldest)chapter of geologic time?

How would we use isotopic ages to infer the ages of the upper and lower unit in this diagram?

What strategies do we use to investigate human origins?

The Nature of Geology

Investigating Geologic Questions

Plate Tectonics

Earth Materials

Igneous Environments

Volcanoes and Volcanic Hazards

Sedimentary Environments and Rocks

Deformation and Metamorphism

The Seafloor and Continental Margins

Mountains, basins, and Continents

Earthquakes and Earths Interior

Climate, weather, and Their Influences on Geology

Glaciers, shorelines, and Changing Sea Levels

Weathering, soil, and Unstable Slopes

Streams and Flooding

Water Resources

Energy and Mineral Resources

Geology of the Solar System

Filters

Exam 9: Geologic Time

This figure shows the geologic timescale.Which period listed below would be part of the Mesozoic?

Using the data in this table,determine the age of the dike.

If you were trying to correlate these two sequences of rocks,what would probably be the most straightforward strategy to use?

What is the youngest event represented in this block diagram?

What kind of geologic feature is shown in this photograph?

What type of feature is shown in this photograph of Siccar Point,Scotland?

Which of following geologic events is the youngest?

This figure shows two sections that partially overlap in age.Dashed lines show how the two sections correlate.What can you conclude from these correlations?

Using the data in this table,calculate the number of half-lives that have passed for the dike (unit D on this table).

This figure shows two fault scarps,a lava flow,and erosion along one of the scarps.What is probably the oldest feature of those listed below?

Which numbered layer in this photograph represents the youngest layer?

The geologic relationships in this figure indicate that the lava flow:

The highest surface on this figure is a river terrace.This terrace:

From this cross section of the Grand Canyon,what is the boundary between the various Precambrian rocks and the Paleozoic sedimentary units?

Which of the numbered features is the oldest?

This figure shows two sections of rocks.What is the youngest unit?

Which of the following is a reason why rock units may change from one section to another?

Which of the following is the earliest (oldest)chapter of geologic time?

How would we use isotopic ages to infer the ages of the upper and lower unit in this diagram?

What strategies do we use to investigate human origins?

The Nature of Geology

Investigating Geologic Questions

Plate Tectonics

Earth Materials

Igneous Environments

Volcanoes and Volcanic Hazards

Sedimentary Environments and Rocks

Deformation and Metamorphism

The Seafloor and Continental Margins

Mountains, basins, and Continents

Earthquakes and Earths Interior

Climate, weather, and Their Influences on Geology

Glaciers, shorelines, and Changing Sea Levels

Weathering, soil, and Unstable Slopes

Streams and Flooding

Water Resources

Energy and Mineral Resources

Geology of the Solar System

Filters