Exam 4: The Way the Earth Works: Plate Tectonics

The lithosphere of the Earth is generally thickest at and near ________ plate boundaries.

Slab pull occurs because subducting slabs are ________.

According to Archimedes' principle of buoyancy,an iceberg sinks until ________.

The volcanoes of the Cascades Mountains in the northwest United States are related to melting of rock associated with a ________.

The San Andreas Fault zone in California is an example of a ________ plate boundary.

Which basic type of plate boundary is shown in the image below?

At a subduction zone,the overriding plate ________.

Oceanic lithosphere thickens away from the mid-ocean ridge primarily due to ________.

The mid-ocean ridges are elevated above the surrounding sea floor because ________.

A guyot is ________.

Tectonic plates move at rates that are approximately ________.

Under the theory of plate tectonics,the plates themselves are ________.

The Wadati-Benioff zone extends down within the mantle to a maximum depth of ________.

Subduction zones are found at which basic plate boundary type?

According to the model proposed by geophysicist J.Tuzo Wilson,hot spots are caused by ________.

Consult the figure below.Hawaii is an example of ________.

The image below shows a cross-sectional view of a typical subduction zone,with earthquake locations shown with small dots.The band of earthquakes that follows the shape of the downgoing plate is termed the ________.

Most of the pulling force driving plate motion is produced ________.

Iceland is one of the few places in the world that is both above sea level and situated atop a ________ plate boundary.

________ is an example of a continental rift and the ________ is/are the result of collision.