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Exam 7: Plate Tectonics: a Scientific Theory Unfolds

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Question 1

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The ________ today marks the location of the rift along which Africa separated from South America.

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Mid-Atlantic Ridge

Question 2

Multiple Choice

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Matching. Match the plate boundary with the appropriate phrase. -the Mid-Atlantic Ridge

A) convergent
B) transform
C) divergent

D) A) and B)
E) A) and C)

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Question 3

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Japan and the Aleutian Islands have formed from a(n) ________ to ________ convergent boundary.

What is the name of the volcanic mountain chain shown in the diagram below?

Describe exactly what type of plate boundary is illustrated below and explain your answer.

The oldest rocks of the oceanic crust are found in deep ocean trenches far away from active, mid-ocean ridges.

Linear, magnetic patterns associated with mid-ocean ridges are configured as ________.

Although Alfred Wegener presented compelling evidence for his continental drift hypothesis (despite lacking a mechanism), why was the true nature of plate boundaries not determined until the 1960s? (Hint: Don't think of historical scientific developments, but rather the scope and rate of geological processes involved in plate tectonics.)

During the geologic past, the magnetic field poles have generally been very close to Earth's rotational poles.

The former late Paleozoic super continent is known as ________.

Which one of the following most accurately describes the volcanoes of the Hawaiian Islands?

Matching. Match the plate boundary with the appropriate phrase. -where subduction zones occur

Matching. Match the plate boundary with the appropriate phrase. -this boundary is normally devoid of volcanism

Word Analysis. Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. Choose the option which does not fit the pattern.

Match the letter of each illustration below to the correct type of plate boundary. A) transform B) divergent C) convergent (a) __________ (b) __________ (c) __________

Hawaii is the oldest island of the Hawaiian Island chain.

Wegener's continental drift hypothesis was weakened because a viable mechanism for moving the continents was lacking.

As the South Atlantic basin widens by seafloor spreading, Africa and South America are moving closer together.

During the first two decades of the twentieth century, ________ was a vigorous proponent of continental drift.

The continental drift hypothesis was rejected primarily because Alfred Wegener could not ________.