Question 1

The early atmosphere of Earth probably did not contain ____.

Accepted Answer

A)  nitrogen 
B)  oxygen 
C)  carbon dioxide 
D)  carbon monoxide 
E)  sulfur dioxide 
A)  nitrogen 
B)  oxygen 
C)  carbon dioxide 
D)  carbon monoxide 
E)  sulfur dioxide B

Question 2

Precambrian time are subdivided based on numerical dates rather than relative dating.

Accepted Answer

A) True 
 B)False  True

Question 3

You are hiking in eastern Canada over a surface composed of very old igneous and metamorphic rocks. In geologic terms, you are most likely walking across a(n) ____.

Accepted Answer

A)  continental shelf 
B)  platform 
C)  orogenic belt 
D)  shield 
E)  continental rise 
A)  continental shelf 
B)  platform 
C)  orogenic belt 
D)  shield 
E)  continental rise D

Question 4

Continents consist of the portion of land above sea level only.

Accepted Answer

A) True 
 B)False

Question 5

Earth's early atmosphere was very rich in oxygen (O2).

Accepted Answer

A) True 
 B)False

Question 6

Autotrophs make their own food.

Accepted Answer

A) True 
 B)False

Question 7

From where does the name "greenstone" in greenstone belts originate?

Accepted Answer

A)  Greenstone belts formed on land. 
B)  Many of the minerals in greenstone belts are green. 
C)  Greenstone belts contain the earliest algal fossils. 
D)  The origins of greenstone belts were first described by the geologist Nathaniel Greene. 
E)  The type locality for greenstone belts is in Greenland. 
A)  Greenstone belts formed on land. 
B)  Many of the minerals in greenstone belts are green. 
C)  Greenstone belts contain the earliest algal fossils. 
D)  The origins of greenstone belts were first described by the geologist Nathaniel Greene. 
E)  The type locality for greenstone belts is in Greenland.

Question 8

The three intervals, from oldest to youngest, of Precambrian time are the ____.

Accepted Answer

A)  Hadean Eon, Archean Eon, and Proterozoic Eon 
B)  Archean Era, Hadean Era, and Proterozoic Era 
C)  Proterozoic Eon, Hadean Eon, and Archean Eon 
D)  Hadean Era, Archean Era, and Proterozoic Era 
E)  Archean Eon, Hadean Eon, and Proterozoic Eon 
A)  Hadean Eon, Archean Eon, and Proterozoic Eon 
B)  Archean Era, Hadean Era, and Proterozoic Era 
C)  Proterozoic Eon, Hadean Eon, and Archean Eon 
D)  Hadean Era, Archean Era, and Proterozoic Era 
E)  Archean Eon, Hadean Eon, and Proterozoic Eon

Question 9

The Moon formed after a large object collided with Earth.

Accepted Answer

A) True 
 B)False

Question 10

Hot mineral-rich seawater is ejected from ____.

Accepted Answer

A)  volcanic arc systems 
B)  convergent boundaries 
C)  submarine hydrothermal vents 
D)  SPAHs (sulfur, phosphorus, and hydrogen) vents 
E)  subduction zones 
A)  volcanic arc systems 
B)  convergent boundaries 
C)  submarine hydrothermal vents 
D)  SPAHs (sulfur, phosphorus, and hydrogen) vents 
E)  subduction zones

Question 11

Most continents contain large central areas in which very ancient rocks are exposed. These areas are called ____.

Accepted Answer

A)  Precambrian shields 
B)  platforms 
C)  continental slopes 
D)  orogenic belts 
E)  continental shelves 
A)  Precambrian shields 
B)  platforms 
C)  continental slopes 
D)  orogenic belts 
E)  continental shelves

Question 12

What is the metabolic process in which organic molecules are synthesized from water and carbon dioxide (CO2), using radiant energy of the sun captured by chlorophyll-containing cells?

Accepted Answer

A)  sexual reproduction 
B)  paleontology 
C)  speciation 
D)  abiogenesis 
E)  photosynthesis 
A)  sexual reproduction 
B)  paleontology 
C)  speciation 
D)  abiogenesis 
E)  photosynthesis

Question 13

Ultramafic lava flows are significant in the Archean rock record because they indicate that Earth was 90 percent molten.

Accepted Answer

A) True 
 B)False

Question 14

The earliest crust was probably ____.

Accepted Answer

A)  rich in precious metals 
B)  composed of felsic igneous rock 
C)  composed of ultramafic rock 
D)  very similar to the one of today 
E)  composed of basaltic rock 
A)  rich in precious metals 
B)  composed of felsic igneous rock 
C)  composed of ultramafic rock 
D)  very similar to the one of today 
E)  composed of basaltic rock

Question 15

Platforms and cratons make up continental shields.

Accepted Answer

A) True 
 B)False

Question 16

What are two possible energy sources for the synthesis of organic molecules?

Accepted Answer

A)  UV radiation and magnetism 
B)  radioactive decay and lightning 
C)  radioactive decay and UV radiation 
D)  lightning and UV radiation 
E)  lightning and magnetism 
A)  UV radiation and magnetism 
B)  radioactive decay and lightning 
C)  radioactive decay and UV radiation 
D)  lightning and UV radiation 
E)  lightning and magnetism

Question 17

Deoxyribonucleic acid (DNA) is an example of a polymer.

Accepted Answer

A) True 
 B)False

Question 18

Precambrian shield areas have been tectonically active since the Phanerozoic.

Accepted Answer

A) True 
 B)False

Question 19

Discuss the origin of Earth's earliest granitic crust. What processes were important in forming this crust?

Accepted Answer

The accretion of island arcs formed the

Question 20

The Precambrian represents approximately 88 percent of geologic time.

Accepted Answer

A) True 
 B)False

The early atmosphere of Earth probably did not contain ____.

Precambrian time are subdivided based on numerical dates rather than relative dating.

You are hiking in eastern Canada over a surface composed of very old igneous and metamorphic rocks. In geologic terms, you are most likely walking across a(n) ____.

Continents consist of the portion of land above sea level only.

Earth's early atmosphere was very rich in oxygen (O₂).

Autotrophs make their own food.

From where does the name "greenstone" in greenstone belts originate?

The three intervals, from oldest to youngest, of Precambrian time are the ____.

The Moon formed after a large object collided with Earth.

Hot mineral-rich seawater is ejected from ____.

Most continents contain large central areas in which very ancient rocks are exposed. These areas are called ____.

What is the metabolic process in which organic molecules are synthesized from water and carbon dioxide (CO₂), using radiant energy of the sun captured by chlorophyll-containing cells?

Ultramafic lava flows are significant in the Archean rock record because they indicate that Earth was 90 percent molten.

The earliest crust was probably ____.

Platforms and cratons make up continental shields.

What are two possible energy sources for the synthesis of organic molecules?

Deoxyribonucleic acid (DNA) is an example of a polymer.

Precambrian shield areas have been tectonically active since the Phanerozoic.

Discuss the origin of Earth's earliest granitic crust. What processes were important in forming this crust?

The Precambrian represents approximately 88 percent of geologic time.

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

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

The early atmosphere of Earth probably did not contain ____.

Precambrian time are subdivided based on numerical dates rather than relative dating.

You are hiking in eastern Canada over a surface composed of very old igneous and metamorphic rocks. In geologic terms, you are most likely walking across a(n) ____.

Continents consist of the portion of land above sea level only.

Earth's early atmosphere was very rich in oxygen (O2).

Autotrophs make their own food.

From where does the name "greenstone" in greenstone belts originate?

The three intervals, from oldest to youngest, of Precambrian time are the ____.

The Moon formed after a large object collided with Earth.

Hot mineral-rich seawater is ejected from ____.

Most continents contain large central areas in which very ancient rocks are exposed. These areas are called ____.

What is the metabolic process in which organic molecules are synthesized from water and carbon dioxide (CO2), using radiant energy of the sun captured by chlorophyll-containing cells?

Ultramafic lava flows are significant in the Archean rock record because they indicate that Earth was 90 percent molten.

The earliest crust was probably ____.

Platforms and cratons make up continental shields.

What are two possible energy sources for the synthesis of organic molecules?

Deoxyribonucleic acid (DNA) is an example of a polymer.

Precambrian shield areas have been tectonically active since the Phanerozoic.

Discuss the origin of Earth's earliest granitic crust. What processes were important in forming this crust?

The Precambrian represents approximately 88 percent of geologic time.

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

Earth's early atmosphere was very rich in oxygen (O₂).

What is the metabolic process in which organic molecules are synthesized from water and carbon dioxide (CO₂), using radiant energy of the sun captured by chlorophyll-containing cells?