Question 1

A major event of the Mesozoic era was the breakup of the supercontinent called Pangaea.

Accepted Answer

A) True 
 B)False

Question 2

A major economic deposit associated with the Cretaceous period is ________.

Accepted Answer

A)  gold
B)  uranium
C)  sand
D)  coal
E)  platinumF) D) and E)
G) A) and B)

Question 3

During the Cambrian,Trilobites developed a flexible exoskeleton which allowed them to ________.

Accepted Answer

A)  avoid being eaten by other creatures
B)  climb trees and find food
C)  burrow in soft sediment to find food
D)  eat smaller life forms by crushing them in their jaws
E)  sink to the bottom of shallow ponds to find foodF) C) and E)
G) B) and D)

Question 4

At the start of the Paleozoic,North America ________.

Accepted Answer

A)  had abundant life
B)  had no plants or animals
C)  did not exist
D)  was a large number of small fragments that had not yet collided
E)  was mountainous and dryF) A) and B)
G) C) and D)

Question 5

The North America craton formed as a result of ________.

Accepted Answer

A)  collision of older crustal fragments composed of island arcs and other fragments
B)  the collision of two continents to form a supercontinent
C)  the break-up of a large supercontinent
D)  a huge volcanic eruption
E)  the metamorphism of oceanic crustF) A) and C)
G) A) and D)

Question 6

The Laramide Orogeny at the end of the Mesozoic produced ________.

Accepted Answer

A)  the Appalachian Mountains in the eastern U.S.
B)  the Ural Mountains in Russia
C)  the Alps in Europe
D)  the Rocky Mountains in the western U.S.
E)  the Himalayan Mountains in AsiaF) A) and E)
G) A) and B)

Question 7

The large outer planets (Jupiter,Saturn,Uranus,and Neptune)contain huge amounts of hydrogen and other light materials as part of their composition.

Accepted Answer

A) True 
 B)False

Question 8

What organic compounds are essential for DNA and RNA to form?

Accepted Answer

A)  ammonia and methane
B)  hydrogen sulfide
C)  carbon dioxide
D)  oxygen
E)  amino acidsF) C) and D)
G) B) and E) E

Question 9

The first elements to form after "Big Bang" were ________.

Accepted Answer

A)  oxygen and hydrogen
B)  oxygen and iron
C)  hydrogen and iron
D)  helium and oxygen
E)  helium and hydrogenF) A) and D)
G) A) and E)

Question 10

Due to differentiation,the lighter,gaseous materials escaped Earth's interior and became the primitive atmosphere.

Accepted Answer

A) True 
 B)False

Question 11

During the Cenozoic era,the eastern and western margins of North America experienced similar geologic events.

Accepted Answer

A) True 
 B)False

Question 12

Planets in the making are referred to as ________.

Accepted Answer

The answer of Planets in the making are referred to...

Question 13

Preserved rocks in North America are generally less than ________.

Accepted Answer

A)  20 km wide
B)  10 km thick
C)  50 km long
D)  3) 5 billion years old
E)  2) 7 g/cm3 in densityF) B) and C)
G) C) and D)

Question 14

Many reptile groups became extinct at the close of the Cenozoic era.

Accepted Answer

A) True 
 B)False  False

Question 15

The supercontinent of Pangaea began to break up during the ________ era.

Accepted Answer

A)  Precambrian
B)  Paleozoic
C)  Mesozoic
D)  CenozoicE) All of the above
F) C) and D)

Question 16

The decay of radioactive atoms,coupled with heat released by colliding particles,produced at least some melting of Earth's early interior.

Accepted Answer

A) True 
 B)False

Question 17

Ozone is a constituent of the ________,where it protects life from ultraviolet radiation from the sun.

Accepted Answer

Stratosphere

Question 18

The first true terrestrial land animals were the mammals.

Accepted Answer

A) True 
 B)False

Question 19

As the solar system began forming,the first materials to condense into small particles were ________ and nickel.

Accepted Answer

A)  oxygen
B)  silicon
C)  nitrogen
D)  carbon
E)  none of theseF) C) and E)
G) All of the above

Question 20

Earth's primitive atmosphere evolved from gases ________.

Accepted Answer

A)  produced by radioactive decay
B)  collected from the nebula
C)  escaping from water
D)  from the Sun
E)  expelled from within the earthF) B) and D)
G) A) and B)

Exam 12: Earths Evolution Through Geologic Time

A major event of the Mesozoic era was the breakup of the supercontinent called Pangaea.

Correct AnswerverifiedShow Answer

A major economic deposit associated with the Cretaceous period is ________.

Correct AnswerverifiedShow Answer

During the Cambrian,Trilobites developed a flexible exoskeleton which allowed them to ________.

Correct AnswerverifiedShow Answer

At the start of the Paleozoic,North America ________.

Correct AnswerverifiedShow Answer

The North America craton formed as a result of ________.

Correct AnswerverifiedShow Answer

The Laramide Orogeny at the end of the Mesozoic produced ________.

Correct AnswerverifiedShow Answer

The large outer planets (Jupiter,Saturn,Uranus,and Neptune)contain huge amounts of hydrogen and other light materials as part of their composition.

Correct AnswerverifiedShow Answer

What organic compounds are essential for DNA and RNA to form?

Correct AnswerverifiedE

The first elements to form after "Big Bang" were ________.

Correct AnswerverifiedShow Answer

Due to differentiation,the lighter,gaseous materials escaped Earth's interior and became the primitive atmosphere.

Correct AnswerverifiedShow Answer

During the Cenozoic era,the eastern and western margins of North America experienced similar geologic events.

Correct AnswerverifiedShow Answer

Planets in the making are referred to as ________.

Correct AnswerverifiedShow Answer

Preserved rocks in North America are generally less than ________.

Correct AnswerverifiedShow Answer

Many reptile groups became extinct at the close of the Cenozoic era.

Correct AnswerverifiedFalse

The supercontinent of Pangaea began to break up during the ________ era.

Correct AnswerverifiedShow Answer

The decay of radioactive atoms,coupled with heat released by colliding particles,produced at least some melting of Earth's early interior.

Correct AnswerverifiedShow Answer

Ozone is a constituent of the ________,where it protects life from ultraviolet radiation from the sun.

Correct AnswerverifiedStratosphere

The first true terrestrial land animals were the mammals.

Correct AnswerverifiedShow Answer

As the solar system began forming,the first materials to condense into small particles were ________ and nickel.

Correct AnswerverifiedShow Answer

Earth's primitive atmosphere evolved from gases ________.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
E

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
False

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Stratosphere

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified