Exam 21: Structural G Eology and P Late Tectonics

The basic mechanism for plate movement is thought to be

Earthquake S waves are

What type of faulting results from stresses parallel to the fault plane?

The plastic-like substratum on which the lithospheric plates move is called the

Which of the following is not one of the three types of plate boundaries?

Seismic waves that propagate through Earth are known as

Alfred Wegener postulated that the continents were once part of a single supercontinent that he called ______________.

Seafloor spreading occurs along ______________.

What type of forces result in normal faulting?

The Appalachian Mountains in the eastern United States are examples of ______________ mountains.

An earthquake of magnitude ______________ on the Richter scale is the smallest that can be felt by humans.

One plate slides horizontally past another plate at the type of plate boundary called ______________.

An earthquake S wave travels through

Between the crust and the outer core lies the region called the ______________.

A(n) ______________ is manifested by the vibrating and sometimes violent movement of Earth's surface.

Folded rock layers that resemble a trough are called ______________.

The type of plate boundary at which one plate collides with another and subduction occurs is called ______________.

Earth's inner core is

A(n) ______________ fault occurs as the result of expansive forces.

After a major earthquake, the rocks may continue to adjust to their new positions, causing additional vibrations called ______________.