|
In the early part of the 20th century, ____________ argued forcefully for continental drift |
Alfred Wegener |
|
The continental drift hypothesis was rejected primarily because Alfred Wegener could not __________. |
identify a mechanism capable of moving continents. |
|
All of the following are evidence supporting the theory of plate tectonics except for _____. |
Changes in the moon’s orbits due to shifting plates |
|
____________ was an ancient reptile that lived in South America and Africa during the late Paleozoic. |
Mesosaurus |
|
Linear, magnetic patterns associated with mid-ocean ridges are configured as ____________. |
normal and reversed magnetized strips roughly parallel to the ridge |
|
____________ most effectively outline the edges of the lithospheric plates |
Lines of earthquake epicenters |
|
The surface manifestation of the activity of a mantle plume is known as a ______ |
hot spot |
|
Which of the following energy sources is thought to drive the lateral motions of Earth’s lithospheric plates? |
export of heat from deep in the mantle to the top of the asthenosphere |
|
Deep-oceanic trenches are most abundant around the rim of the ____________ ocean basin. |
Pacific |
|
continental rift zones are generally associated with a __________ plate boundary |
divergent |
|
A typical rate of seafloor spreading in the Atlantic Ocean is ____________. |
2 centimeters per year |
|
The volcanoes and deep valleys of east Africa are related to a ____________. |
Continental rift along which parts of the African continent are beginning to slowly separate |
|
The modern-day Red Sea is explained by plate tectonics theory because it is ____________. |
a rift zone that may eventually open into a major ocean if Arabia and Africa continue to separate |
|
New oceanic crust and lithosphere are formed at ____________ |
divergent boundaries by submarine eruptions and intrusions of basaltic magma |
|
Deep ocean trenches are the surface manifestations of ____ |
sinking of oceanic lithosphere into the mantle at a subduction zone |
|
The ____________ is an example of an active, continent-continent collision? |
northward movement of India into Eurasia |
|
Cooler, older, oceanic lithosphere sinks into the mantle at ______ |
subduction zones along convergent plate boundaries |
|
The Aleutian Islands occur at a ___________ |
convergent boundary on a volcanic arc above a northward-subducting Pacific plate |
|
A transform plate boundary is characterized by ________ |
a deep, vertical fault along which two plates slide past one another in opposite directions |
|
Which one of the following most accurately describes the volcanoes of the Hawaiian Islands? |
shield volcanoes fed by a long-lived hot spot below the Pacific lithospheric plate |
|
a.Oceanic ridge b. seafloor spreading c.Arc volcanoes D.divergent |
Arc Valcanoes |
|
a. Hawaii b. island arc c. volcanic arc d. subduction |
Hawaii |
Share This
Flashcard
