Question 1

At the start of the Mesozoic,the climate was ________.

Accepted Answer

A) humid 
B) dry 
C) very cold 
D) very warm 
E) rapidly changing 
A) humid 
B) dry 
C) very cold 
D) very warm 
E) rapidly changing

Question 2

During the late Paleozoic,the present-day North America,Europe,western Asia,Siberia,and perhaps China formed the northern continent of ________.

Accepted Answer

A) Gondwanaland 
B) Laurasia 
C) Greenland 
D) Africa 
E) none of the above 
A) Gondwanaland 
B) Laurasia 
C) Greenland 
D) Africa 
E) none of the above

Question 3

One significant difference between oceanic and continental crust in terms of the long term evolution of the earth's surface is that ________.

Accepted Answer

A) oceanic crust is less dense than continental crust 
B) oceanic crust preserves a history of ancient deformation better than continental crust 
C) continental crust is harder to subduct than oceanic crust 
D) continental crust is more uniform in composition than oceanic crust 
E) oceanic crust contains more radioactive elements that contribute to the heating of the earth. 
A) oceanic crust is less dense than continental crust 
B) oceanic crust preserves a history of ancient deformation better than continental crust 
C) continental crust is harder to subduct than oceanic crust 
D) continental crust is more uniform in composition than oceanic crust 
E) oceanic crust contains more radioactive elements that contribute to the heating of the earth.

Question 4

The major source of free oxygen in the atmosphere is from ________.

Accepted Answer

A) molten rock 
B) water 
C) green plants 
D) silicate minerals 
E) glaciers 
A) molten rock 
B) water 
C) green plants 
D) silicate minerals 
E) glaciers

Question 5

A distinctive characteristic of prokaryotes is ________.

Accepted Answer

A) their thick cell walls that separate the DNA from the rest of the cell 
B) their lack of a separation between the DNA and the rest of the cell 
C) their oxygen based metabolism 
D) their methane based metabolism 
E) their ability to produce sugars 
A) their thick cell walls that separate the DNA from the rest of the cell 
B) their lack of a separation between the DNA and the rest of the cell 
C) their oxygen based metabolism 
D) their methane based metabolism 
E) their ability to produce sugars

Question 6

Eukaryotes are the earliest life forms identified on earth and they date back to nearly 3.5 billion years ago.

Accepted Answer

A) True 
 B)False

Question 7

One group of reptiles,exemplified by the fossil Archaeopteryx,led to the evolution of ________.

Accepted Answer

A) dinosaurs 
B) mammals 
C) cephalopods 
D) birds 
E) horses 
A) dinosaurs 
B) mammals 
C) cephalopods 
D) birds 
E) horses

Question 8

Well preserved remains of many tiny organisms extend the record of life back beyond 5 billion years.

Accepted Answer

A) True 
 B)False

Question 9

The North American Cordillera formed as a result of ________.

Accepted Answer

A) the subduction of the Atlantic basin beneath North America 
B) the subduction of the Pacific basin beneath North America 
C) the evolution of the San Andreas Fault zone 
D) the growth of the Appalachian Mountains 
A) the subduction of the Atlantic basin beneath North America 
B) the subduction of the Pacific basin beneath North America 
C) the evolution of the San Andreas Fault zone 
D) the growth of the Appalachian Mountains

Question 10

The Appalachian Mountains formed as a result of ________.

Accepted Answer

A) the break-up of Pangaea 
B) the collision of North America and Africa 
C) the collision of North America and Europe 
D) the collision of Greenland and Norway 
E) the initial formation of Pangaea 
A) the break-up of Pangaea 
B) the collision of North America and Africa 
C) the collision of North America and Europe 
D) the collision of Greenland and Norway 
E) the initial formation of Pangaea

Question 11

What would have happened to the earth if it were 10% closer to the sun?

Accepted Answer

A) Our atmosphere would consist mainly of carbon dioxide. 
B) Our atmosphere would consist mainly of nitrogen. 
C) Liquid water and the water cycle would not exist. 
D) Our sun would have burned out after a few hundred million years so life would not evolve. 
A) Our atmosphere would consist mainly of carbon dioxide. 
B) Our atmosphere would consist mainly of nitrogen. 
C) Liquid water and the water cycle would not exist. 
D) Our sun would have burned out after a few hundred million years so life would not evolve.

Question 12

Cambrian Mississippian Jurassic Devonian

Accepted Answer

The answer of Cambrian Mississippian Jurassic Devonian...

Question 13

What would have happened to the earth if the Sun were significantly larger than it is?

Accepted Answer

A) Our atmosphere would consist mainly of carbon dioxide. 
B) Our atmosphere would consist mainly of nitrogen. 
C) Liquid water and the water cycle would not exist. 
D) Our Sun would have burned out after a few hundred million years so life would not evolve. 
A) Our atmosphere would consist mainly of carbon dioxide. 
B) Our atmosphere would consist mainly of nitrogen. 
C) Liquid water and the water cycle would not exist. 
D) Our Sun would have burned out after a few hundred million years so life would not evolve.

Question 14

Cenozoic Phanerozoic Mesozoic Paleozoic

Accepted Answer

The answer of Cenozoic Phanerozoic Mesozoic Paleozoic...

Question 15

Planetesimals,asteroid-size objects,form during the early history of the solar nebula due to ________.

Accepted Answer

A) collisions of particles of ice,metal,and rocky material rotating about the protosun 
B) vortices in the rotating disc associated with the protosun 
C) the formation of comets in the outer parts of the solar nebula 
D) the break-up of the solar nebula as it cools and contracts 
A) collisions of particles of ice,metal,and rocky material rotating about the protosun 
B) vortices in the rotating disc associated with the protosun 
C) the formation of comets in the outer parts of the solar nebula 
D) the break-up of the solar nebula as it cools and contracts

Question 16

The waste gas released by plants as they synthesize food sugars from carbon dioxide and water is ________.

Accepted Answer

A) oxygen 
B) methane 
C) nitrogen 
D) carbon dioxide 
A) oxygen 
B) methane 
C) nitrogen 
D) carbon dioxide

Question 17

The bodies of our solar system began forming about 5 billion years ago from an enormous cloud of minute rocky fragments and gases.

Accepted Answer

A) True 
 B)False

Question 18

Fossil fuels are abundant in Precambrian rocks.

Accepted Answer

A) True 
 B)False

Question 19

During the early Paleozoic era,the continent of Gondwanaland included North and South America.

Accepted Answer

A) True 
 B)False

Question 20

Primitive organisms,called ________,reproduce asexually and contain cells that lack organized nuclei.

Accepted Answer

The answer of Primitive organisms,called ________,reproduce asexually and contain cells...

Exam 12: Earths Evolution Through Geologic Time

At the start of the Mesozoic,the climate was ________.

During the late Paleozoic,the present-day North America,Europe,western Asia,Siberia,and perhaps China formed the northern continent of ________.

One significant difference between oceanic and continental crust in terms of the long term evolution of the earth's surface is that ________.

The major source of free oxygen in the atmosphere is from ________.

A distinctive characteristic of prokaryotes is ________.

Eukaryotes are the earliest life forms identified on earth and they date back to nearly 3.5 billion years ago.

One group of reptiles,exemplified by the fossil Archaeopteryx,led to the evolution of ________.

Well preserved remains of many tiny organisms extend the record of life back beyond 5 billion years.

The North American Cordillera formed as a result of ________.

The Appalachian Mountains formed as a result of ________.

What would have happened to the earth if it were 10% closer to the sun?

Cambrian Mississippian Jurassic Devonian

What would have happened to the earth if the Sun were significantly larger than it is?

Cenozoic Phanerozoic Mesozoic Paleozoic

Planetesimals,asteroid-size objects,form during the early history of the solar nebula due to ________.

The waste gas released by plants as they synthesize food sugars from carbon dioxide and water is ________.

The bodies of our solar system began forming about 5 billion years ago from an enormous cloud of minute rocky fragments and gases.

Fossil fuels are abundant in Precambrian rocks.

During the early Paleozoic era,the continent of Gondwanaland included North and South America.

Primitive organisms,called ________,reproduce asexually and contain cells that lack organized nuclei.

Introduction to Earth Science

Matter and Minerals

Rocks: Materials of the Solid Earth

Weathering, soil, and Mass Wasting

Running Water and Groundwater

Glaciers, deserts, and Wind

Plate Tectonics: a Scientific Revolution Unfolds

Earthquakes and Earths Interior

Volcanoes and Other Igneous Activity

Crustal Deformation and Mountain Building

Geologic Time

The Ocean Floor

Ocean Water and Ocean Life

The Dynamic Ocean

The Atmosphere: Composition,structure,and Temperature

Moisture, clouds, and Precipitation

Air Pressure and Wind

Weather Patterns and Severe Weather

World Climates and Global Climate Change

Origin of Modern Astronomy

Touring Our Solar System

Light,astronomical Observations,and the Sun

Beyond Our Solar System

Filters