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Why was Alfred Wegener\'s hypothesis of continental drift rejected? A) It was no

ID: 287353 • Letter: W

Question

Why was Alfred Wegener's hypothesis of continental drift rejected?

A)

It was not supported by empirical evidence.

B)

It lacked a credible explanation for the mechanism for continental drift.

C)

Other scientists clearly demonstrated that Pangaea could never have existed.

D)

It challenged the long-held assumption that continents and oceans had fixed geographic positions.

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Question 3 (1 point)

Which of the following statements is NOT true?

A)

Oceanic crust is more dense than continental crust.

B)

The lithosphere responds to forces by bending or breaking while the asthenosphere behaves by flowing.

C)

Dense lithospheric plates float on top of the liquid asthenosphere layer.

D)

Continental lithosphere tends to be thicker than oceanic lithosphere.

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Which of the following statements is true about Earths' tectonic plates and boundaries?

A)

The northern edge of the Pacific Plate is colliding with the North American Plate.

B)

Plates are all roughly the same size.

C)

Plates are defined entirely by continental margins.

D)

The majority of plate boundaries that bisect the oceans are transform.

New ocean floor is generated along ______________.

A)

subduction zones

B)

mid-ocean ridges

C)

ocean trenches

D)

continental volcanic arcs

Which modern-day feature provides us a view of how the Atlantic Ocean may have formed?

A)

San Andreas Fault

B)

Mariana Trench

C)

Red Sea

D)

Himalayan Mountains

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Which of the following statements is true about the Himalayan Mountains?

A)

They formed from subduction of the Indian Plate beneath the Eurasian Plate.

B)

They formed from the buckling of continental crust colliding with other continental crust.

C)

They formed from the partial melting of continental crust.

D)

They are a relatively young volcanic arc system.

Transform plate boundaries _____.

A)

mostly offset segments of the oceanic ridge system

B)

are also called destructive boundaries

C)

are the type of boundaries responsible for part of California someday falling into the ocean

D)

All of the above

A)

Alternating stripes of normal and reverse polarity parallel mid-ocean ridges

B)

The age of the inactive volcanic islands that make up the Hawaiian island chain increases with increasing distance from the youngest and most volcanically active island.

C)

Oceanic crust decreases in age with increasing distance form mid-ocean ridges

D)

Sediment thickness increases with increasing distance form the mid-ocean ridges

Which of the following is a major driving force of plate motion?

A)

Mantle convection

B)

Ridge push

C)

Slab pull

D

All of the above

A)

It was not supported by empirical evidence.

B)

It lacked a credible explanation for the mechanism for continental drift.

C)

Other scientists clearly demonstrated that Pangaea could never have existed.

D)

It challenged the long-held assumption that continents and oceans had fixed geographic positions.

Explanation / Answer

1. Why was Alfred Wegener's hypothesis of continental drift rejected?

ANS-It lacked a credible explanation for the mechanism for continental drift.

2.Which of the following statements is NOT true?

ANS-Continental lithosphere tends to be thicker than oceanic lithosphere.

3.Which of the following statements is true about Earths' tectonic plates and boundaries?

ANS-The northern edge of the Pacific Plate is colliding with the North American Plate.

4.New ocean floor is generated along

ANS-mid-ocean ridges

5.Which modern-day feature provides us a view of how the Atlantic Ocean may have formed?

ANS- red sea

6. Which of the following is a major driving force of plate motion?

ANS-Mantle convection

7.Transform plate boundaries

ANS-mostly offset segments of the oceanic ridge system

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