Exam 3: Plate Tectonics: a Unifying Theory

arrow
  • Select Tags
search iconSearch Question
flashcardsStudy Flashcards
  • Select Tags

What term refers to an episode of mountain building involving deformation-usually accompanied by igneous activity, metamorphism, and crustal thickening?

Free
(Multiple Choice)
4.9/5
(74)
Correct Answer:
Verified

E

In a(n) ____________________ plate boundary, lithosphere is neither created nor destroyed.

Free
(Short Answer)
4.9/5
(74)
Correct Answer:
Verified

transform

Using examples, discuss the evidence supporting the continental drift hypothesis.

Free
(Essay)
4.9/5
(82)
Correct Answer:
Verified

The student should discuss the evidence, including continent shapes, rock types, paleontology, glaciology, and remnant magnetism. Examples may include Glossopteris , magnetic stripes on the seafloor, glacial striations, age of seafloor, etc.

Magma that is formed at subduction zones by partial melting in the descending plate commonly has a(n) ____ composition.

(Multiple Choice)
4.9/5
(60)

Because tectonic plates move in response to mantle convection, each plate moves at the same rate.

(True/False)
4.8/5
(89)

Faunal and floral diversity decrease when continents break up, and increase when continents join together in larger landmasses.

(True/False)
4.9/5
(81)

Both divergent and transform plate boundaries exist at mid-ocean ridges.

(True/False)
4.7/5
(92)

Hot spots move with continental plates.

(True/False)
4.8/5
(80)

In analyzing continental drift, the name given to the northern supercontinent was ____.

(Multiple Choice)
5.0/5
(84)

Earth's magnetic poles coincide with the geographic (rotational) poles.

(True/False)
4.9/5
(70)

A localized zone of melting (commonly thought to be stationary) below the lithosphere is called a(n) ____.

(Multiple Choice)
4.9/5
(65)

Magnetism results from the spin of electrons in some solids.

(True/False)
4.8/5
(76)

Climatic and geographic barriers provide boundaries for ___________________, which are regions with a distinct assemblage of plants and animals.

(Short Answer)
4.9/5
(72)

What are terranes, and what information do they provide?

(Essay)
4.8/5
(74)

Why are many petroleum and mineral deposits found at ancient convergent boundaries?

(Multiple Choice)
4.8/5
(66)

Which statement about the properties of Earth's crust is true at subduction zones?

(Multiple Choice)
4.9/5
(84)

Compare and contrast the three types of convergent plate boundaries: oceanic-oceanic, continental-continental, and oceanic-continental. Detail the geologic processes occurring at each and identify by location the geologic features that form.

(Essay)
4.9/5
(78)

The oldest oceanic crust is slightly less than ____ years old.

(Multiple Choice)
4.9/5
(72)

Explain the process of convection as it occurs on Earth , and include a diagram of a convection cell. Make sure your drawing shows Earth's core, mantle, crust, a spreading ridge, and a trench.

(Essay)
4.8/5
(86)

The East African Rift Valley illustrates the formation of divergent plate boundary in a continental setting. Explain the four steps in the formation of a divergent plate boundary.

(Essay)
4.8/5
(79)
Showing 1 - 20 of 70
close modal

Filters

  • Essay(0)
  • Multiple Choice(0)
  • Short Answer(0)
  • True False(0)
  • Matching(0)