Question 1

Which of the following rock types would be least likely to record the magnetic field at the time the rock formed?

Accepted Answer

A)  basaltic lava flow 
B)  deep-sea shale 
C)  alluvial conglomerate 
A)  basaltic lava flow 
B)  deep-sea shale 
C)  alluvial conglomerate C

Question 2

What is the lower mantle made up of?

Accepted Answer

A)  dense silicate minerals 
B)  iron-nickel alloy 
C)  silicate melt 
A)  dense silicate minerals 
B)  iron-nickel alloy 
C)  silicate melt A

Question 3

Earth's hydrosphere did not begin to form until at least 2 billion years ago.

Accepted Answer

A) True 
 B)False  False

Question 4

-Which part of the Earth depicted in the figure above is molten?

Accepted Answer

A)  crust 
B)  mantle 
C)  outer core 
D)  inner core 
A)  crust 
B)  mantle 
C)  outer core 
D)  inner core

Question 5

About what percentage of species went extinct during the largest mass extinction in Earth history?

Accepted Answer

A)  15% 
B)  40% 
C)  70% 
D)  95% 
A)  15% 
B)  40% 
C)  70% 
D)  95%

Question 6

What are the two most abundant elements (by weight) in the whole Earth?

Accepted Answer

A)  iron and oxygen 
B)  oxygen and silicon 
C)  silicon and iron 
A)  iron and oxygen 
B)  oxygen and silicon 
C)  silicon and iron

Question 7

The ___ is the information preserved in rocks formed at various times throughout Earth history.

Accepted Answer

A)  geologic data 
B)  geologic record 
C)  geodynamic information 
A)  geologic data 
B)  geologic record 
C)  geodynamic information

Question 8

-Which region of the Earth consists primarily of iron and magnesium silicates?

Accepted Answer

A)  region A 
B)  region B 
C)  region C 
A)  region A 
B)  region B 
C)  region C

Question 9

Which of the following statements about the scientific method is not true?

Accepted Answer

A)  A tentative explanation of a body of data is called a hypothesis. 
B)  Theories are less likely than hypotheses to be correct. 
C)  A hypothesis is strengthened if it successfully predicts the outcomes of new experiments. 
A)  A tentative explanation of a body of data is called a hypothesis. 
B)  Theories are less likely than hypotheses to be correct. 
C)  A hypothesis is strengthened if it successfully predicts the outcomes of new experiments.

Question 10

Which of the following powers the Earth's internal heat engine?

Accepted Answer

A)  radioactivity 
B)  heat trapped during the formation of the Earth 
C)  A and B 
D)  neither A nor B 
A)  radioactivity 
B)  heat trapped during the formation of the Earth 
C)  A and B 
D)  neither A nor B

Question 11

Complete the following sentence: Scientific hypotheses should always be_______.

Accepted Answer

A)  testable 
B)  correct 
C)  complex 
D)  simple 
A)  testable 
B)  correct 
C)  complex 
D)  simple

Question 12

Beneath mountain belts, the Moho is

Accepted Answer

A)  deeper than it is beneath normal continental crust. 
B)  shallower than it is beneath normal continental crust. 
C)  at the same depth as it is beneath normal continental crust. 
A)  deeper than it is beneath normal continental crust. 
B)  shallower than it is beneath normal continental crust. 
C)  at the same depth as it is beneath normal continental crust.

Question 13

Which of the following techniques are used by geologists in their research?

Accepted Answer

A)  creating computer models 
B)  laboratory experiments 
C)  observing the natural environment 
D)  all of these 
A)  creating computer models 
B)  laboratory experiments 
C)  observing the natural environment 
D)  all of these

Question 14

About when did the first animals evolve on Earth, according to current geological understanding?

Accepted Answer

A)  10 million years ago 
B)  60 million years ago 
C)  100 million years ago 
D)  600 million years ago 
A)  10 million years ago 
B)  60 million years ago 
C)  100 million years ago 
D)  600 million years ago

Question 15

Which of the following statements about the lithosphere is not true?

Accepted Answer

A)  The lithosphere is cool and relatively brittle. 
B)  The lithosphere includes the crust and uppermost mantle. 
C)  The lithosphere is easily deformed, like a tube of toothpaste. 
A)  The lithosphere is cool and relatively brittle. 
B)  The lithosphere includes the crust and uppermost mantle. 
C)  The lithosphere is easily deformed, like a tube of toothpaste.

Question 16

Humans have been on Earth for ___ of Earth's history.

Accepted Answer

A)  less than 1% 
B)  approximately 50% 
C)  more than 90% 
A)  less than 1% 
B)  approximately 50% 
C)  more than 90%

Question 17

Evidence in the rock record shows that there have been ___ major extinction events during Earth's history.

Accepted Answer

A)  10 
B)  5 
C)  2 
A)  10 
B)  5 
C)  2

Question 18

Which of the following statements is correct?

Accepted Answer

A)  The Earth's asthenosphere is much stronger than the lithosphere. 
B)  The Earth's asthenosphere is much weaker than the lithosphere. 
C)  The Earth's asthenosphere and lithosphere are similar in strength. 
A)  The Earth's asthenosphere is much stronger than the lithosphere. 
B)  The Earth's asthenosphere is much weaker than the lithosphere. 
C)  The Earth's asthenosphere and lithosphere are similar in strength.

Question 19

The geodynamo system is responsible for producing the Earth's

Accepted Answer

A)  magnetic field. 
B)  convecting mantle. 
C)  weather. 
A)  magnetic field. 
B)  convecting mantle. 
C)  weather.

Question 20

How did Earth's atmosphere become oxygenated?

Accepted Answer

A)  volcanic outgassing 
B)  gasses from asteroid impacts 
C)  radiation interacting with the atmosphere 
D)  oxygen-producing organisms 
A)  volcanic outgassing 
B)  gasses from asteroid impacts 
C)  radiation interacting with the atmosphere 
D)  oxygen-producing organisms

Which of the following rock types would be least likely to record the magnetic field at the time the rock formed?

What is the lower mantle made up of?

Earth's hydrosphere did not begin to form until at least 2 billion years ago.

-Which part of the Earth depicted in the figure above is molten?

About what percentage of species went extinct during the largest mass extinction in Earth history?

What are the two most abundant elements (by weight) in the whole Earth?

The ___ is the information preserved in rocks formed at various times throughout Earth history.

-Which region of the Earth consists primarily of iron and magnesium silicates?

Which of the following statements about the scientific method is not true?

Which of the following powers the Earth's internal heat engine?

Complete the following sentence: Scientific hypotheses should always be_______.

Beneath mountain belts, the Moho is

Which of the following techniques are used by geologists in their research?

About when did the first animals evolve on Earth, according to current geological understanding?

Which of the following statements about the lithosphere is not true?

Humans have been on Earth for ___ of Earth's history.

Evidence in the rock record shows that there have been ___ major extinction events during Earth's history.

Which of the following statements is correct?

The geodynamo system is responsible for producing the Earth's

How did Earth's atmosphere become oxygenated?

Why We Study Earth

Plate Tectonics: The Unifying Theory of Geology

Earth Materials: Minerals and Rocks

Igneous Processes and Volcanism

Sedimentation: Rocks Formed by Surface Processes

Deformation and Metamorphism

Timing the Geologic Record

History of Earth

The Climate System and Glaciation

The Hydrologic Cycle and Groundwater

Shaping Earths Surface: Streams, Coastlines, and Wind

Earthquakes and Earth Structure

Human Impact on Earths Environment

Filters

Exam 2: How We Study Earth

Which of the following rock types would be least likely to record the magnetic field at the time the rock formed?

What is the lower mantle made up of?

Earth's hydrosphere did not begin to form until at least 2 billion years ago.

-Which part of the Earth depicted in the figure above is molten?

About what percentage of species went extinct during the largest mass extinction in Earth history?

What are the two most abundant elements (by weight) in the whole Earth?

The ___ is the information preserved in rocks formed at various times throughout Earth history.

-Which region of the Earth consists primarily of iron and magnesium silicates?

Which of the following statements about the scientific method is not true?

Which of the following powers the Earth's internal heat engine?

Complete the following sentence: Scientific hypotheses should always be_______.

Beneath mountain belts, the Moho is

Which of the following techniques are used by geologists in their research?

About when did the first animals evolve on Earth, according to current geological understanding?

Which of the following statements about the lithosphere is not true?

Humans have been on Earth for ___ of Earth's history.

Evidence in the rock record shows that there have been ___ major extinction events during Earth's history.

Which of the following statements is correct?

The geodynamo system is responsible for producing the Earth's

How did Earth's atmosphere become oxygenated?

Why We Study Earth

Plate Tectonics: The Unifying Theory of Geology

Earth Materials: Minerals and Rocks

Igneous Processes and Volcanism

Sedimentation: Rocks Formed by Surface Processes

Deformation and Metamorphism

Timing the Geologic Record

History of Earth

The Climate System and Glaciation

The Hydrologic Cycle and Groundwater

Shaping Earths Surface: Streams, Coastlines, and Wind

Earthquakes and Earth Structure

Human Impact on Earths Environment

Filters