Question 1

A(n)________ is a period when a supercontinent rifts into fragments, spreads apart, and the fragments reassemble into a new supercontinent.

Accepted Answer

A) convection cycle 
B) supercontinent cycle 
C) suturing cycle 
D) orogenic cycle 
A) convection cycle 
B) supercontinent cycle 
C) suturing cycle 
D) orogenic cycle B

Question 2

When did the first terrestrial plants appear on the land surface?

Accepted Answer

A) 400 million years ago 
B) 327 million years ago 
C) 225 million years ago 
D) 65 million years ago 
A) 400 million years ago 
B) 327 million years ago 
C) 225 million years ago 
D) 65 million years ago A

Question 3

What was the name of the supercontinent that formed approximately 1.1 billion years ago?

Accepted Answer

A) Rodinia 
B) Pangaea 
C) Nuna 
D) Baltica 
A) Rodinia 
B) Pangaea 
C) Nuna 
D) Baltica A

Question 4

How old are the oldest fossils of more advanced organisms, the eukaryotes?

Accepted Answer

A) 3.8 billion years 
B) 3.5 billion years 
C) 2.8 billion years 
D) 2.1 billion years 
A) 3.8 billion years 
B) 3.5 billion years 
C) 2.8 billion years 
D) 2.1 billion years

Question 5

Subduction of the ________ Plate beneath the North American Plate at approximately 60 million years ago resulted in the ________ Orogeny that created the Rocky Mountains.

Accepted Answer

A) Pacific; Taconic 
B) South American; Nevadan 
C) Farallon; Laramide 
D) African; Alleghanian 
A) Pacific; Taconic 
B) South American; Nevadan 
C) Farallon; Laramide 
D) African; Alleghanian

Question 6

Which of the following does not characterize the early development and specialization of mammals?

Accepted Answer

A) Increase in brain capacity 
B) Increase in body size 
C) Increase in lung capacity 
D) Specialization of teeth to accommodate diets 
A) Increase in brain capacity 
B) Increase in body size 
C) Increase in lung capacity 
D) Specialization of teeth to accommodate diets

Question 7

Which of the following gases was present in Earth's early atmosphere?

Accepted Answer

A) Water vapor 
B) Carbon dioxide 
C) Hydrogen 
D) Methane 
E) All of these gases 
A) Water vapor 
B) Carbon dioxide 
C) Hydrogen 
D) Methane 
E) All of these gases

Question 8

The ________ Period was called the golden age of trilobites, resulting in more than 600 genera of these organisms.

Accepted Answer

A) Silurian 
B) Cambrian 
C) Jurassic 
D) Mississippian 
A) Silurian 
B) Cambrian 
C) Jurassic 
D) Mississippian

Question 9

One hypothesis for the formation of life suggests that amino acids were carried ready-made to Earth by ________.

Accepted Answer

A) solar radiation 
B) prokaryotes 
C) carbonaceous chondrites 
D) lightning 
A) solar radiation 
B) prokaryotes 
C) carbonaceous chondrites 
D) lightning

Question 10

Why is the molten metallic core of Earth necessary for life to exist?

Accepted Answer

Molten iron convects in the co

Question 11

Stromatolites went extinct at the end of the Permian Period along with 95 percent of all marine species on Earth.

Accepted Answer

A) True 
 B)False

Question 12

The first primitive organisms on Earth came into existence approximately ________ years ago.

Accepted Answer

A) 10,000 
B) 550 million 
C) 3.8 billion 
D) 4.6 billion 
A) 10,000 
B) 550 million 
C) 3.8 billion 
D) 4.6 billion

Question 13

During which geologic time period did Pangaea form?

Accepted Answer

A) Precambrian 
B) Late Paleozoic Era 
C) Mesozoic Era 
D) Mid-Cretaceous Era 
A) Precambrian 
B) Late Paleozoic Era 
C) Mesozoic Era 
D) Mid-Cretaceous Era

Question 14

Because of the original molten state of Earth, it is likely that the first crust was ________ in composition.

Accepted Answer

A) ultramafic 
B) mafic 
C) intermediate 
D) felsic 
A) ultramafic 
B) mafic 
C) intermediate 
D) felsic

Question 15

What organism is visible in this image?

Accepted Answer

A) Amphibian 
B) Brachiopod 
C) Crinoid 
D) Trilobite 
A) Amphibian 
B) Brachiopod 
C) Crinoid 
D) Trilobite

Question 16

Mammals did not evolve until the beginning of the Cenozoic and then did so to fill an evolutionary niche left behind by the dinosaurs.

Accepted Answer

A) True 
 B)False

Question 17

________ are organisms that reproduce sexually and have cells that contain nuclei.

Accepted Answer

A) Prokaryotes 
B) Eukaryotes 
C) Protologics 
D) Cenozoics 
A) Prokaryotes 
B) Eukaryotes 
C) Protologics 
D) Cenozoics

Question 18

What is the molecular formula for ozone?

Accepted Answer

A) O 
B) O2 
C) O3 
D) O4 
A) O 
B) O2 
C) O3 
D) O4

Question 19

During which period did the break-up of Pangaea begin?

Accepted Answer

A) Permian 
B) Tertiary 
C) Triassic 
D) Jurassic 
A) Permian 
B) Tertiary 
C) Triassic 
D) Jurassic

Question 20

How does the formation, break-up, and subsequent formation of supercontinents explain the origin of cratons?

Accepted Answer

Subduction will bring small volcanic isl

Exam 22: Earths Evolution Through Geologic Time

A(n)________ is a period when a supercontinent rifts into fragments, spreads apart, and the fragments reassemble into a new supercontinent.

When did the first terrestrial plants appear on the land surface?

What was the name of the supercontinent that formed approximately 1.1 billion years ago?

How old are the oldest fossils of more advanced organisms, the eukaryotes?

Subduction of the ________ Plate beneath the North American Plate at approximately 60 million years ago resulted in the ________ Orogeny that created the Rocky Mountains.

Which of the following does not characterize the early development and specialization of mammals?

Which of the following gases was present in Earth's early atmosphere?

The ________ Period was called the golden age of trilobites, resulting in more than 600 genera of these organisms.

One hypothesis for the formation of life suggests that amino acids were carried ready-made to Earth by ________.

Why is the molten metallic core of Earth necessary for life to exist?

Stromatolites went extinct at the end of the Permian Period along with 95 percent of all marine species on Earth.

The first primitive organisms on Earth came into existence approximately ________ years ago.

During which geologic time period did Pangaea form?

Because of the original molten state of Earth, it is likely that the first crust was ________ in composition.

What organism is visible in this image?

Mammals did not evolve until the beginning of the Cenozoic and then did so to fill an evolutionary niche left behind by the dinosaurs.

________ are organisms that reproduce sexually and have cells that contain nuclei.

What is the molecular formula for ozone?

During which period did the break-up of Pangaea begin?

How does the formation, break-up, and subsequent formation of supercontinents explain the origin of cratons?

An Introduction to Geology

Plate Tectonics: a Scientific Revolution Unfolds

Matter and Minerals

Magma, Igneous Rocks, and Intrusive Activity

Volcanoes and Volcanic Hazards

Weathering and Soil

Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Geologic Time

Crustal Deformation

Earthquakes

Earths Interior

Divergent Boundaries

Convergent Boundaries

Mass Wasting

Running Water

Groundwater

Glaciers and Glaciation

Deserts and Winds

Shorelines

Global Climate Change

Energy and Mineral Resources

Touring Our Solar System

Filters

Subduction of the Plate beneath the North American Plate at approximately 60 million years ago resulted in the Orogeny that created the Rocky Mountains.