Question 1

Early atmospheric gases were emitted because of ____________________.

Accepted Answer

The answer of Early atmospheric gases were emitted because of...

Question 2

Describe and discuss the difference between a craton and a shield.

Accepted Answer

A shield is the Precambrian rocks that a

Question 3

What are the two tectonic models postulated for greenstone belt evolution?

Accepted Answer

A)  back-arc marginal basin and continent/continent collision 
B)  continent/continent collision and intracontinental rift 
C)  intracontinental rift and back-arc marginal basin 
D)  subduction and mid-ocean ridge 
E)  subduction and continent/continent collision 
A)  back-arc marginal basin and continent/continent collision 
B)  continent/continent collision and intracontinental rift 
C)  intracontinental rift and back-arc marginal basin 
D)  subduction and mid-ocean ridge 
E)  subduction and continent/continent collision

Question 4

Since its formation, the Moon has slowly been moving away from Earth.

Accepted Answer

A) True 
 B)False

Question 5

____________________ organisms need no oxygen to survive.

Accepted Answer

The answer of ____________________ organisms need no oxygen to survive....

Question 6

What are the primitive organisms thought to have been responsible for the development of Earth's oxygen-rich atmosphere in the Precambrian?

Accepted Answer

A)  tillites 
B)  cyanobacteria (blue-green algae) 
C)  foraminifera 
D)  diatoms 
E)  prokaryotes 
A)  tillites 
B)  cyanobacteria (blue-green algae) 
C)  foraminifera 
D)  diatoms 
E)  prokaryotes

Question 7

The accumulation of an early atmosphere by the release of gases from Earth's interior during volcanism is known as ____.

Accepted Answer

A)  photosynthesis 
B)  outgassing 
C)  abiogenesis 
D)  continental accretion 
E)  stromatolite 
A)  photosynthesis 
B)  outgassing 
C)  abiogenesis 
D)  continental accretion 
E)  stromatolite

Question 8

The process by which life formed from nonliving matter is known as ____.

Accepted Answer

A)  outgassing 
B)  photosynthesis 
C)  continental accretion 
D)  abiogenesis 
E)  anaerobic evolution 
A)  outgassing 
B)  photosynthesis 
C)  continental accretion 
D)  abiogenesis 
E)  anaerobic evolution

Question 9

Oxygen accumulated in the atmosphere via ____.

Accepted Answer

A)  processes in the ozone hole 
B)  nucleosynthesis 
C)  meteorite bombardments 
D)  differentiation 
E)  photosynthesis 
A)  processes in the ozone hole 
B)  nucleosynthesis 
C)  meteorite bombardments 
D)  differentiation 
E)  photosynthesis

Question 10

The time in Earth's history before 4 billion years (4000 m.y.) is known as the ____.

Accepted Answer

A)  Hadean 
B)  Proterozoic 
C)  Archean 
D)  Paleoarchean 
E)  Eoarchean 
A)  Hadean 
B)  Proterozoic 
C)  Archean 
D)  Paleoarchean 
E)  Eoarchean

Question 11

Greenstone belts are some of the youngest rocks on Earth.

Accepted Answer

A) True 
 B)False

Question 12

Despite their differences, the terrestrial planets have similar evolutionary trends.

Accepted Answer

A) True 
 B)False

Question 13

Collectively, the shield and platform of a continent are known as a(n) ____________________.

Accepted Answer

The answer of Collectively, the shield and platform of a...

Question 14

What is the primary component of Earth's current atmosphere?

Accepted Answer

A)  carbon dioxide 
B)  oxygen 
C)  water vapor 
D)  nitrogen 
E)  argon 
A)  carbon dioxide 
B)  oxygen 
C)  water vapor 
D)  nitrogen 
E)  argon

Question 15

Discuss the origin of early Earth's hydrosphere.

Accepted Answer

The water in the hydrosphere probably ca

Question 16

Greenstone belts are dominated by volcanic rocks in the lower and middle parts, and sedimentary rocks in the upper part.

Accepted Answer

A) True 
 B)False

Question 17

How are ocean and continental crust different?

Accepted Answer

A)  Continental crust is basalt, whereas oceanic crust is granite. 
B)  Continental crust is formed by volcanism, whereas oceanic crust is not. 
C)  Continental crust is granite, whereas oceanic crust is basalt. 
D)  Continental crust is dense, whereas oceanic crust is less dense. 
E)  Continental crust is thin, whereas oceanic crust is thick. 
A)  Continental crust is basalt, whereas oceanic crust is granite. 
B)  Continental crust is formed by volcanism, whereas oceanic crust is not. 
C)  Continental crust is granite, whereas oceanic crust is basalt. 
D)  Continental crust is dense, whereas oceanic crust is less dense. 
E)  Continental crust is thin, whereas oceanic crust is thick.

Question 18

Why is the early rock record of the Precambrian rocks more difficult to interpret than the rock record of the Phanerozoic Eon?

Accepted Answer

Precambrian rocks have been al

Question 19

The first supercontinent present by Proterozoic time was Vaalbara.

Accepted Answer

A) True 
 B)False

Question 20

Why does Earth have water?

Accepted Answer

A)  photosynthesis 
B)  large concentrations of sedimentary rocks 
C)  torrential flooding in Earth's early history 
D)  enormous tidal forces in early Earth history 
E)  outgassing and comet impacts 
A)  photosynthesis 
B)  large concentrations of sedimentary rocks 
C)  torrential flooding in Earth's early history 
D)  enormous tidal forces in early Earth history 
E)  outgassing and comet impacts

Early atmospheric gases were emitted because of ____________________.

Describe and discuss the difference between a craton and a shield.

What are the two tectonic models postulated for greenstone belt evolution?

Since its formation, the Moon has slowly been moving away from Earth.

____________________ organisms need no oxygen to survive.

What are the primitive organisms thought to have been responsible for the development of Earth's oxygen-rich atmosphere in the Precambrian?

The accumulation of an early atmosphere by the release of gases from Earth's interior during volcanism is known as ____.

The process by which life formed from nonliving matter is known as ____.

Oxygen accumulated in the atmosphere via ____.

The time in Earth's history before 4 billion years (4000 m.y.) is known as the ____.

Greenstone belts are some of the youngest rocks on Earth.

Despite their differences, the terrestrial planets have similar evolutionary trends.

Collectively, the shield and platform of a continent are known as a(n) ____________________.

What is the primary component of Earth's current atmosphere?

Discuss the origin of early Earth's hydrosphere.

Greenstone belts are dominated by volcanic rocks in the lower and middle parts, and sedimentary rocks in the upper part.

How are ocean and continental crust different?

Why is the early rock record of the Precambrian rocks more difficult to interpret than the rock record of the Phanerozoic Eon?

The first supercontinent present by Proterozoic time was Vaalbara.

Why does Earth have water?

The Dynamic and Evolving Earth

Minerals and Rocks

Plate Tectonics: a Unifying Theory

Geologic Time Concepts and Principles

Rocks Fossils and Time Making Sense of the Geologic Record

Sedimentary Rocks the Archives of Earth History

Evolution the Theory and Its Supporting Evidence

Precambrian Earth and Life History the Proterozoic Eon

Early Paleozoic Earth History

Late Paleozoic Earth History

Paleozoic Life History Invertebrates

Paleozoic Life History Vertebrates and Plants

Mesozoic Earth History

Life of the Mesozoic Era

Cenozoic Earth History the Paleogene and Neogene Periods

Cenozoic Earth History the Quaternary Period

Life of the Cenozoic Era

Primate and Human Evolution

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Exam 8: Precambrian Earth and Life History the Hadean and the Archean Eon

Early atmospheric gases were emitted because of ____________________.

Describe and discuss the difference between a craton and a shield.

What are the two tectonic models postulated for greenstone belt evolution?

Since its formation, the Moon has slowly been moving away from Earth.

____________________ organisms need no oxygen to survive.

What are the primitive organisms thought to have been responsible for the development of Earth's oxygen-rich atmosphere in the Precambrian?

The accumulation of an early atmosphere by the release of gases from Earth's interior during volcanism is known as ____.

The process by which life formed from nonliving matter is known as ____.

Oxygen accumulated in the atmosphere via ____.

The time in Earth's history before 4 billion years (4000 m.y.) is known as the ____.

Greenstone belts are some of the youngest rocks on Earth.

Despite their differences, the terrestrial planets have similar evolutionary trends.

Collectively, the shield and platform of a continent are known as a(n) ____________________.

What is the primary component of Earth's current atmosphere?

Discuss the origin of early Earth's hydrosphere.

Greenstone belts are dominated by volcanic rocks in the lower and middle parts, and sedimentary rocks in the upper part.

How are ocean and continental crust different?

Why is the early rock record of the Precambrian rocks more difficult to interpret than the rock record of the Phanerozoic Eon?

The first supercontinent present by Proterozoic time was Vaalbara.

Why does Earth have water?

The Dynamic and Evolving Earth

Minerals and Rocks

Plate Tectonics: a Unifying Theory

Geologic Time Concepts and Principles

Rocks Fossils and Time Making Sense of the Geologic Record

Sedimentary Rocks the Archives of Earth History

Evolution the Theory and Its Supporting Evidence

Precambrian Earth and Life History the Proterozoic Eon

Early Paleozoic Earth History

Late Paleozoic Earth History

Paleozoic Life History Invertebrates

Paleozoic Life History Vertebrates and Plants

Mesozoic Earth History

Life of the Mesozoic Era

Cenozoic Earth History the Paleogene and Neogene Periods

Cenozoic Earth History the Quaternary Period

Life of the Cenozoic Era

Primate and Human Evolution

Filters